400 must have
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| Crops | Food Crop |
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| abandon(v.) | To leave; to give up | To save their lives, the sailors had to abandon the sinking ship. |
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| adversely (adv.) | In a harmful way; negatively | Excessive rainfall early in the spring can adversely affect the planting of crops. |
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| aggregate (adj. n. v.) | Gathered into or amounting to a whole | It is impossible to judge last year’s performance without knowing the aggregate sales numbers. | انبوه توده جمع جمع شده مجموع
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| fertilize (v.) | To supply with nourishment for plants by adding helpful substances to the soil | This farm fertilizes tomatoes more than any other crop. | حاصلخیز کردن بارور کردن کود دادن
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| nourishment | غذا قوت خوراک تغذیه | To supply with nourishment for plants by adding helpful substances to the soil |
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| intensify (v.) | To increase in power; to act with increased strength | Jacob’s long absence intensified his certainty that he should marry Rose. |
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| irrigation (n.) | The supplying of water to dry land | In dry areas of the country, you can see ditches all over the farmland for irrigation. | ابیاری
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| obtain (v.) | To gain possession of; to get | After a series of difficult interviews, he finally was able to obtain the job. |
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| photosynthesis (n.) | The process by which green plants make their own food by combining water, salts, and carbon dioxide in the presence of light. | Oxygen is a by-product of the process of photosynthesis. |
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| precipitation (n.) | Water that falls to the Earth’s surface | In the Pacific Northwest, the high level of precipitation ensures rich, green plant life. | بارش
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| disaster | مصیبت حادثه بد بدبختی |
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| anticipate (v.) | To expect; to sense something before it happens | By placing sensors in earthquake-prone areas, scientists can anticipate some tremors in time to warn the public. |
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| tremor | لرزش تکان لرزه |
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| prone | متمایل مستعد دمر درازکش | By placing sensors in earthquake-prone areas, scientists can anticipate some tremors in time to warn the public. |
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| catastrophic (adj.) | Extremely harmful; causing financial or physical ruin | The architect died in a catastrophic elevator accident. | مصیبت بار فاجعه بر انگیز
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| ruin | نابودی خراب کردن |
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| collide (v.) | To come together with great or violent force | As usual, their holiday was ruined when their in-laws’ views on politics collided with their own | تصادم کردن، بهم خوردن
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| eruption (n.) | A sudden, often violent, outburst | The eruption of Mount St. Helens in 1980 caused 57 deaths and immeasurable change to the face of the mountain. |
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| famine (n.) | Severe hunger; a drastic food shortage | The potato famine in Ireland in the mid-nineteenth century caused large numbers of Irish people to emigrate to America. | قحطی،خشکسالی
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| drastic | موثر قوی جدی شدید |
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| flood (n.) | An overflowing of water; an excessive amount | The constant rain and poor drainage system caused a flood in town |
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| opponent | مخالف،حریف خصم طرف | The political party sent out a flood of letters criticizing their opponents. |
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| impact (n.) | A strong influence | The speech about the importance of education made an impact on me. |
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| persevere (v.) | To keep going, despite obstacles or discouragement; to maintain a purpose | The hikers persevered despite the bad weather and the icy trail. | پشتکار داشتن،استقامت به خرج دادن،ثابت قدم ماندن
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| obstacle | گیر مانع پاگیر سدراه |
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| plunge (v.) | To go down suddenly; to decrease by a great amount in a short time | He jumped off the diving board and plunged into the pool. شیرجه رفتن،ناگهان داخل شدن | The value of the company’s stock plunged after its chief executive
was arrested.
سقوط سنگین
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| unleash (v.) | To release a thing or an emotion | When they saw the strange man on their property, they unleashed their dogs. | He is from such an unemotional family, he will never learn to unleash his feelings.
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| Evolution | تکامل،تغییر شکل،تحول |
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| adapt (v.) | To adjust to the circumstances; to make suitable | Dinosaurs could not adapt to the warmer temperatures. | The teacher adapted the exercises for his more advanced students.
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| diverse (n.) | Various; showing a lot of differences within a group | India is one of the most linguistically diverse countries in the world. |
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| evolve (v.) | To develop; to come forth | Modern-day sharks evolved from their ancestor Eryops, which lived more than 200 million years ago. | بیرون دادن،استنتاج کردن،نمو کردن
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| feature (n.) | Part, characteristic | The best feature of this car is its heated seats. |
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| generation (n.) | A group of people born at about the same time | As older managers retired, a new generation of leaders took control of the company. |
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| inherent (adj.) | Naturally characteristic; always found within something, because it’s a basic part of that thing | No job can be interesting all the time. Boredom is inherent in any kind of work. |
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| harvest | The migration of farm workers from one state to the next depends primarily on the harvest. | خرمن محصول دروکردن |
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| ape | Because of the shape of its throat, an ape does not have the physical ability to speak. | میمون،بوزینه |
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| survive (v.) | To continue living (despite some danger or illness) | After getting lost in the mountains, Gordon survived by eating wild plants and catching fish. |
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| constraint (n.) | Something that restricts thought or action | The constraints of military life kept Eileen from seeing Private Morris more than once a month. |
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| contamination (n.) | Being made less clean by a germ or hazardous substance | The contamination in the river came from the factory located just upstream. | الودگی کثافت
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| deplete (v.) | To greatly decrease the supply of a resource or material | The prolonged war depleted the country’s national treasury. | تهی کردن،خالی کردن
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| dispose of (v.) | To throw away; to get rid of; to kill | She disposed of her unwanted possessions before moving. مرتب کردن | She disposed of her unwanted possessions before moving.
ترتیب کار ها را دادن
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| tyrant | ستمگر |
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| elementally (adv.) | In terms of elements; basically | Elementally, coal and diamonds are the same. |
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| emission (n.) | Sending out from a small space into the general environment; a substance discharged into the air | The Environmental Protection Agency regulates the emission of pollutants into the air. | صدور خروج نشر
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| extinction (n.) | Complete disappearance; the end of existence | Human beings have caused the extinction of many other species. | خاموش سازس انقراض اعدام
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| reservoir (n.) | A place where a liquid is collected and stored | Cult members threatened to poison the town’s water reservoir. |
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| shrink (v.) | To become reduced in size, amount, or value | If you dry your clothing on the “high heat” setting, they may shrink. |
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| accustomed | خوگرفته،معتاد |
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| adjust (v.) | To change; to get accustomed to something | Travelers are advised to adjust their watches before arriving in the new time zone. |
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| arbitrary (adj.) | Chosen simply by whim or chance, not for any specific reason | The decision to build a school in Blackberry Township was arbitrary, without any thought to future housing patterns. |
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| whim | هوس،خیال،وهم |
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| denominator (n.) | The number written below the line in a fraction | In the fraction 1⁄2, the number 2 is the denominator. |
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| lowest common denominator | the most basic and unsophisticated things that most people share |
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| exponentially (adv.) | At a very fast rate | In Turkey, the value of the lira has decreased exponentially in the last several decades. |
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| infinitesimal (adj.) | Immeasurably small | The number of contaminants in the water was infinitesimal, so the water was safe to drink. |
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| contaminant | جسم آلوده |
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| maximize (v.) | To increase or make as great as possible | A coach helps each athlete maximize his or her potential. |
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| parallel (adj.) | Being an equal distance apart everywhere | The street where I live runs parallel to the main road through town. |
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| proportion (n.) | A part in relation to the whole | The average employee spends a large proportion of each workday answering e-mails. |
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| rate (n.v.) | The cost per unit of a good or service; the motion or change that happens in a certain time. | Postal rates in Japan are among the highest in the world. | Some grasses grow at the rate of one inch per day.
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| succession | توالی،جانشینی،ردیف، وراثت | To organize or arrange in succession | Volunteers have been asked to sequence the files and organize the boxes.
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| accuracy (n.) | Precision; exactness | The research department checks all our articles for accuracy of facts before we print them. |
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| adjacent (adj.) | Next to | Even though the villages are adjacent to each other, their residents speak different languages. |
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| compress (v.) | To press together | To make the foundation stronger, they compressed the soil before pouring the concrete. |
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| feasibly (adv.) | Practically; in a way that can work | Scientists can’t feasibly bring energy from deep ocean currents to where it is needed -on land. |
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| gut (v.) | To empty or hollow out | In order to remodel the house, we must first gut it and throw away all the old fixtures. | احشا،پرخوری،حریصانه خوردن،غارت کردن
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| integrally (adv.) | In a whole or complete manner | Writing and spelling are taught integrally as part of the reading program. |
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| overlap (v.n.) | To lie over part of something; to have elements in common | One of the two assistants will likely get fired, since most of their duties in the office overlap. |
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| retain (v.) | To keep or hold | The rain fell so heavily that the banks of the river could not retain all the water. |
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| seep (v.) | To pass slowly for a long time, as a liquid or gas might | As the containers rusted, the toxic waste seeped into the ground. | چکه کردن،چکه،تراوش
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| rust | زنگ،زنگ زدن |
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| outsiders | Most companies have a social structure that can’t be understood by outsiders. | خارجی،بیگانه |
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| circulate (v.) | To move throughout an area or group; to move along a somewhat circular route | The gossip circulated quickly through the small town. | Blood circulates more quickly during physical exercise.
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| corrode (v.) | To be slowly weakened by chemical reactions | Sitting in salt water, the old coins corroded and became very easy to break. | خوردن،پوسیدن،زنگ زدن
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| derive (v.) | To come from, usually through a long, slow process | The Cyrillic alphabet was derived from the Greek alphabet. |
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| expeditiously (adv.) | Quickly and efficiently | Using carrier pigeons, the military commanders exchanged messages expeditiously. |
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| implement (v.) | To make use of; to carry out | Not until after the new software was installed could we implement the new filing system. | اجرا کردن،تکمیل کردن،وسیله،الت
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| innovative (adj.) | Ahead of the times; novel | The innovative use of props and lighting drew many favorable comments. |
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| maintenance (n.) | The act of keeping something in good condition | The only problem with living in such a big house is that it requires a lot of maintenance. |
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| imitation | تقلید،پیروی،بدلی،جعلی | simulation |
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| combustion (n.) | The process of burning | When air quality is poor, combustion of materials in a fireplace is prohibited. |
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| prohibit | منع کردن،تحریم،منع |
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| convey (v.) | To transport from one place to another; to transmit or make known | A messenger conveyed the prince’s letter to the commander of the army. |
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| discretely (adv.) | Separately; distinctly | In order to understand how the engine worked, each component needed to be studied discretely. |
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| permeate (v.) | To spread or flow throughout; to pass through or penetrate | The smell of cooking permeated the entire apartment building. | نفوذ کردن ، سرایت کردن ، نشت کردن
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| solar (adj.) | Of, or relating to, the sun | The ancient society kept time with a solar calendar. |
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| trigger (v.) | To set off or initiate | I was certain any mention of politics would trigger a big argument. | ماشه،ماشه چیزی را کشیدن،رها کردن،راه انداختن
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| acquisition | The act of taking possession of something | Our recent acquisition of over 2,000 books makes ours the biggest library in the region. | فراگیری، اکتساب، استفاده ، (حق. ) مالکیت.
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| anomaly (n.) | Something unusual | White tigers get their beautiful coloring from a genetic anomaly. |
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| degrade (v.) | To reduce in value or strength | The roads in cold or wet areas of the United States degrade faster than those in warm, sunny regions. |
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| gap (n.) | Opening; a big difference in amount or quality | The small gap between the walls in the old house caused cold drafts to come in. |
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| indisputable (adj.) | Beyond doubt; unquestionable | The members of the jury found her guilty because they found the facts of the case indisputable. | بطور غیر قابل بحث، بطور مسلم
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| intervene (v.) | To come between | A good mediator intervenes only as much as necessary to settle a dispute between other parties. | حائل شدن .مداخله کردن
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| mediator | میانجی، دلال |
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| dispute | مشاجره ، نزاع، جدال کردن |
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| intuitively (adv.) | By means of a natural sense about things that are hard to observe | Many mothers know intuitively when something is wrong with their children. | بصیری،ذاتی
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| recede (v.) | To move back or away from | After the age of 30, his hairline began to recede further back from his forehead. | پس رفتن
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| retrieve (v.) | To bring or get back | Most dogs can be trained to retrieve objects that their owners have thrown. | باز یافتن،پس گرفتن
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| cultivation (n.) | Preparing the land to grow crops; improvement for agricultural purposes | With the development of land cultivation, hunters and gatherers were able to settle in one place. | کشت زراعت تربیت ترویج
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