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Lesson 16
| Term | Definition |
|---|---|
| astronaut | (someone who travels in a) spaceship |
| atmosphere | ball of air (surrounding Earth) |
| century | relating to one hundred (years) |
| construct | to build together or with |
| descend | to climb down |
| extend | to stretch out |
| manufacturer | one who does the process of making (something by) hand |
| sturdier | more strong or solid |