Save
Busy. Please wait.
Log in with Clever
or

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever
or

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

IELTS雅思8000词汇25

美国凯奥教育中心

QuestionAnswer
oak n.橡树,栎树
oar n.橹,桨
oath n.誓言,誓约
obedience n.服从,顺从
obedient adj.服从的,顺从的
obey v.服从,遵守
object n.物体,目的 v.反对
objection n.反对,异议,不愿
objective n.目标 adj.客观的
obligation n.义务,责任
oblige v.责成,使感激
obliterate adj.删去,抹掉
oblong adj.椭圆形的
obscure adj.无名的 v.遮蔽
observance n.仪式,习惯
observation n.观察,评述
observe v.观察,遵守,注视
observer n.观察员
obstacle n.障碍(物)
obstinate adj.固执的,顽强的
obstruction n.堵塞,妨碍
obtain v.获得
obtainable adj.可得到的
obvious adj.明显的
obviously adv.明显地,显然
occasion n.场合,盛事,机会
occasional adj.偶然的,有时的
occasionally adv.偶尔,有时
occident n.西方
occidental adj.西方的,西洋的
occupation n.职业,占有
occupy v.占据,占领,担任
occur v.发生,出现,想到
occurrence n.发生,出现,事件
ocean n.海洋,大洋
Oceania n.大洋洲
oceanography n.海洋学
o-clock adv.点钟
October n.十月
odd adj.古怪的,奇数的
odour n.气味
of prep.的(表示领属等)
off adv.去 prep.离开
off-duty adj.不当班的
offence n.过错,冒犯,攻击
offend v.冒犯,得罪
offensive adj.冒犯的,攻击的
offer v. & n.提供,报盘
offering n.报盘,提供的货物
off-grade adj.等外的,质差的
office n.办公室,事务所
officer n.军官,警官,官员
official n.官员 adj.官方的
offset v.抵消,弥补
offspring n.子女,子孙
often adv.经常,常常
oh int.哦,嗬
oil n.油,石油
o.k. adj . & n.(缩)对,行
old adj.老的,岁的
olive n.橄榄(树)
omen n.前兆
ominous adj.不祥的
omission n.省略
omit v.省略,遗漏
on prep.在上,关于
once adv.一度,一次
one num. & n.一,一个
oneself pron.自己,自身
onion n.洋葱
only adj.唯一的 adv.仅仅
onset n.攻击,着手
onto prep.到上
onward adv. & adj.向前(的)
opal n.蛋白石
opaque adj.不透明的
open adj.开的 v.打开
opener n.开罐器,起子
opening n.开始,通路,孔
opera n.歌剧
operate v.运转,操作,开刀
operation n.操作,生效,手术
operational adj.业务上的,操作的
operative adj.有效的
operator n.操作人员,接线员
opinion n.意见,评论,看法
opium n.鸦片
opponent n.对手,敌手
opportune adj.及时的,凑巧的
opportunity n.机会,机遇,时机
oppose v.反对,反抗
opposite adj.对立的,对面的
opposition n.敌对,反抗
oppress v.压抑,压迫,压制
oppression n.压迫
optical adj.视觉的,光学的
optimal adj.最佳的
optimism n.乐观(主义)
optimistic adj.乐观(主义)的
optimize v.最佳化
optimum n.最佳条件
option n.选择,可选择的东西
optional adj.可任选的,随意的
or conj.或者,即,否则
oral adj.口头的,口的
orange n.柑桔,橙色
orbit n.轨道
orchard n.果园
orchestra n.管弦乐队,交响乐
order n.命令,订货,次序
orderly adj.整齐的 n.勤务员
ordinarily adv.通常
ordinary adj.普通的,一般的
ore n.矿石,矿物
organ n.器官,风琴
organic adj.器官的,有机的
organism n.有机体
organization n.组织,团体
organizational adj.组织的
organize v.组织,筹备,编排
orient n.东方 v.定方针
oriental adj. & n.东方的(人)
orientation n.定向,倾向性
origin n.起源,产地
original adj.原始的 n.原物
originality n.独创性
originally adv.原来,当初
originate v.起源,首创
ornament n.装饰(品)
ornamental adj.装饰的
orphan n.孤儿
oscillation n.摆动,振动
other adj.其他的,别的
otherwise adv.另外的 conj.否则
ought v.应该,大概
ounce n.盎司
our pron.我们的
ourselves pron.我们自己
out adv.出外,向外,完
outbreak n.爆发,发作
outcome n.结果
outdoor adj.野外的,露天的
outdoors adv.在外的,在野外的
outer adj.外部的,外面的
outermost adj.最外的
outland n.偏僻地区
outlandish adj.外国的
outlaw n.逃犯,歹徒
outlay n.费用,支出
outlet n.出口,销路
outline n.轮廓,略图,大纲
outlook n.看法,景色,展望
output n.出产,产量
outrage n.暴行
outrageous adj.残暴的
outright adj.公然地,直率地
outset n.开头,起初
outside n.外部 adv.在外面
outsider n.局外人
outskirts n.郊区
outstanding adj.杰出的,未付款的
outturn n.卸货情况
outward adj. & adv.向外(的)
oval adj.椭圆(形)的
oven n.烤炉,锅灶
over prep.在上方,越过
overall adj.总的,全面的
overcast adj.多云的
overcharge v. & n.多收(的)钱
overcoat n.外套,大衣
overcome v.征服,克服,压倒
overestimate v.估计过高
overextend v.使承担过多的义务
overflow v.泛滥,溢出,满怀
overhead adv. & adj.头上(的)
overhear v.偶然听到,偷听
overjoy n.使大喜
overlap v.重叠
overlapping adj.相互重叠的
overload adv. & n.超载
overlook v.视察,俯瞰,宽容
overnight adv. & adj.终夜(的)
overpayment n.多付的款项
overseas adv. & adj.海外(的)
oversight n.监视,疏忽
overtake v.赶上,压倒
overthrow v.推翻,颠覆
overtime n.超时,加班
overwhelm v.压倒,淹没
overwhelming adj.压倒的
owe v.欠,归功于
owing adj.该付的
owl n.猫头鹰
own adj.自己的 v.拥有
owner n.物主,所有人
ownership n.所有权,所有制
ox n.公牛
oxide n.氧化物
oxygen n.氧,氧化
oyster n.牡蛎,蚝
Created by: markclass
Popular English Vocabulary sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards