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1.improve v.改善；改进；提高
Your work will get by, but try to improve it.
你的工作勉强通过了,但要设法改善它。
2.extraterrestrial n.外星人
Extraterrestrial life has often become the subject of science fiction films.
科幻片经常以外星生命为主题。
3.amateur n.外行；业余爱好者
An amateur shouldn't play roulette for high stakes.
外行不该下大赌注赌轮盘赌。
4.application n.应用；申请
The application of new scientific discoveries to industrial production methods usually increases efficiency.
把新的科学发现运用到工业生产上,通常可以提高效率。
5.biological a.生物的；生物学的
Biological warfare is terrible.
生物战很可怕。
