1. experiment with sth. 用某物实验
2. experiment on sth. 对某物进行实验
3. do/make an experiment 做实验
4. make a breakthrough 取得重大突破(进展)
5. convert A into/to B 把A转换成B
6. take the place of = replace 取代,代替
7. in place of 取代,代替(介词短语)
8. instead of 代替,而不是(介词短语)
9. a quantity of + 不可数名词,谓语动词用单数
10. quantities of + 可数名词复数,谓语动词用复数
quantities of + 不可数名词,谓语动词用复数
11. bring up 抚育;教养,呕吐,提出(话题等)
12. bring down 降低
bring about 导致,引起
bring back 归还;恢复;回想
bring in 赚(钱);带进;传入
13. search for 寻找
14. search sb/sp 搜查某人或某地
15. in search of 寻求/寻找……
16. as a result of 由于…的结果
17. owing to / thanks to /due to /because of 由于
18. the key to…  ……的关键
the answer to the question 问题的答案
19. export sth to 出口某物到……
20. the second most important 第二重要的
21. be interested in… 对……感兴趣
22. graduate from….. 从…..(地方)毕业
23. escape from (out of)+sp. 从某地逃脱;逃走
escape from reality 逃避现实
24. have a narrow escape 九死一生
25. a fire escape 紧急出口;安全门
26. clear up (天气)放晴;整理;收拾
27. be known for 因…..而出名/闻名
be known an 以……而知名,著称
be known to 为……所知
28. earn one’s living 谋生
 = make a living             
29. come to power 掌权;执政
30. take power 取得政权
31. It is possible that…. 可能…… 
32. It’s certain that... 一定…….
It’s certain that you’ll succeed. 
33. It’s likely that…… 可能…..  
It’s likely that he is doing his homework. 
34. It seems that 好像……
35. at war 在交战中
36. be diagnosed with 被诊断出…, 患有…
37. become the voice of 成为…的代言人
38. partly because of 一部分因为