9B Unit 4 单词、短语、重点句(中英文)

单词：

1. 头盔helmet interplanetary percentage 2. 行星planet 10. 网络network 18. 劣势，缺点，不利条件3. 拥挤的crowded 11. 快地，迅速地rapidly disadvantage 4. 被污染的polluted 12. 围绕，将…圈起来19. 风险，危险risk 5. 使人不舒服的，不舒适circle 20. 商品，货品（复数）goods

的uncomfortable 13. 距离，远处distance 21. 电子的electronic 6. 氧气oxygen 14. 可能性possibility 22. 娱乐entertainment7. 专门地，特地15. 外星人alien

specially 16. 外来者，陌生人8. 漂浮，飘浮float stranger 9. 行星间的17. 百分率，百分数短语：

1. 氧气罐air tank 7. 人口的迅速增长the rapid increase in 2. 干粮dried food population 3. 电源包power pack 8. 一致同意be in agreement 4. 睡袋sleeping bag 9. 以…开始begin with… 5. 开展，执行carry out 10. 意识到be aware of6. 毕竟after all 重点句：

1. 我也没有。Me neither.

2. 人们有望能够在火星上重新开始，建设一个更好的世界。It is hoped that people could

start all over again and build a better world on Mars.

3. 这里描述的是火星上的生活可能是什么样子。Here is what life there could be like. 4. 目前，我们的宇宙飞船太慢了，无法运送大批的乘客去火星---因为要花几个月的时间。

At present, our spacecraft are too slow to carry large numbers of passengers to Mars—it would take months. 5. 随着科技的发展，到2100年，乘坐以光速飞行的宇宙飞船，行程或许只要大约20分钟！

With the development of technology, by the year 2100, the journey might only take about 20 minutes in spacecraft that travel at the speed of light.

6. 食物很大可能会以药片的形式存在，而且味道没那么可口。Food would most probably

be in the form of pills and would not be so tasty.

7. 火星上的重力大约只有地球上的八分之三。The gravity on Mars is only about

three-eighths of that on the Earth.

8. 火星上有较小的重力。There is less gravity on Mars.

9. 与地球上的生活相比，火星上的生活在有些方面要好一些。Compared with life on the

Earth, life on Mars would be better in some ways. 10. 火星上的生活，不仅有挑战性，还很有趣。Life on Mars would be interesting as well

as challenging.