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1. on board 到船上， 在船上， 上火车或飞机
2. boast of (or about) 吹嘘
3. out of breath 喘不过气来
4. in brief(=in as few words as possible)简言之
5. in bulk 成批地，不散装的
6. take the floor 起立发言
7. on business 出差办事。
8. be busy with sth.于某事 . be busy doing sth. 忙于做某事
9. last but one 倒数第二。
10. but for (=without) 要不是。 表示假设
11. buy sth. for…money 用多少钱买
12. be capable of 能够， 有能力 be capable of being +过去分词是能够被…的
13. in any case(=for love or money， at any rate， at any price， at any cost ， whatever happens; anyhow)无论如何
14. in case (=for fear that) 万一;
15. in case of (=in the event of)如果发生…万一 in the case of 至于…， 就…而言
16. in no case在任何情况下都不(放句首倒装句)
17. be cautious of 谨防
18. center one's attention on(=focus one's attention on) 把某人的注意力集中在…上
19. be certain of (=be sure of) 有把握， 一定。
20. for certain of (=for sure )肯定地，有把握地
21. for the better 好转
22. get the better of (=defeat sb.) 打败， 胜过。
23. by birth 在出生上，论出身，按血统 at birth 在出生时; give birth to 出生
24. blame sb. for sth. 因…责备某人 . blame sth. on sb. 把…推在某人身上
25. in blossom开花(指树木) be in blossom开花(强调状态) come into blossom开花(强调动作)
26. be confident of 有信心; confidential 机密的
27. confine…to… 把…限制在某范围内
28. confirm sb. in 使某人更坚定(信念等)
29. conform to (=be in agreement with， comply with) 符合，遵照，遵守;1)obey 服从; 2) observe; 3)comply with照…办; 4)keep to遵循; 5)abide by服从;6)stick to按……做
30. be confronted with(=be brought face to face with) 面对， 面临
31. congratulate sb. on 祝贺
32. in connection with(=with regard to)关于，
33. be conscious of(=be aware of)觉察，知道
34. consent to(=give agreement to permission)同意
35. in consequence (=as a result) 结果
36. in consequence of (=as a consequence of)由于…的结果
37. under consideration 在考虑中
38. in consideration of (=in return for， on account of， because of )由于
39. on no consideration(in no case)无论如何也不
40.take…into consideration (=take account of， take…into account)考虑到， 把 …考虑进去
41. considerate (=thoughtful of the needs) 体贴的， 考虑他人需要的， considerable相当大的，值得考虑的
42. consist of(=be composed of)由…组成的。 consist in主要在于。 consist with符合，与…一致
43. be consistent with(=be in agreement with)与…一致。 be consistent in一贯的 ，
44. consult sb. on about sth. 向…征求…方面的意见， 就…向…请教
45. to one's heart's content尽情地，痛痛快快
46. in out of condition (=thoroughly healthy or fit not fit) 健康状况好不好 . in good (bad) condition处于良好(坏)状态
47. confess(to)(=admit a fault， crime， or sth. wrong)承认， 供认; confess to a crime 承认罪行。
48. confide in (=to talk freely to sb. about one's secret) 对…讲真心话， 依赖
49. in confidence 推心置腹地; with confidence 满怀信心地; have confidence in 对…有信心
50. confidence in sb. sth. 对…的信赖