1. a big headache 令各位轻微头疼的各项

2. a fraction of 一有些

3. a matter of concern 核心

4. a series of 一系列,一连串

5. absent from 不讳,入席

6. abundant in 富于

7. account for 解惑

8. accuse sb. of sth. 控

9. add to 加强(add up to)

10. after all 究竟结果,事实

11. agree with 宁愿

12. ahead of time / schedule 稽延

13. ahead of 在...前后(ahead of time 稽延)

14. alien to 与...背道而驰

15. all at once 没想到,除这样

16. all but 简直;除...都

17. all of a sudden 没想到

18. all over again 再把,还

19. all over 通用

20. all right 令各位满足的;应该

21. all the same 则是,也是白搭的

22. all the time 长久,长久

23. angry with sb. at/about sth.活力,悲愤

24. anxious about/for烦闷,担忧

25. anything but 绝对是不

26. apart from 除...外(有/无)

27. appeal to 招引,告,信号

28. applicable to通用于

29. apply to通用

30. appropriate for/to适合,紧身

31. approximate to近似,濒临

32. apt at有见识,善于

33. apt to易于

34. around the clock废寝忘食

35. as a matter of fact 实习上

36. as a result(of) 是以,只因为

37. as a rule 通常,尚

38. as far as ...be concerned 就...而言

39. as far as 远至,到...轻重

40. as follows 以下

41. as for 对于,相关

42. as good as 和...简直也

43. as if 仿佛,抗原

44. as regards 相关,对于

45. as to 对于,相关

46. as usual 像身边也,尚

47. as well as 除...外(也),即...又

48. as well 一样,也,还

49. ashamed of 过意不去,脸皮薄

50. aside from 除...外(另有)

51. ask for the moon假想

52. at a loss 没谱儿,慌神

53. at a time 把,早起醒来

54. at all costs 爱少数人民币

55. at all events 不管怎么,不论怎么

56. at all times 不时的,老是

57. at all 丝毫(不),一点也不

58. at any rate 不论怎么,顶

59. at best 极端,顶

60. at first sight 乍一看,初看起来

61. at first 开首,最先

62. at hand 在手边,在邻近

63. at heart 心里里,本质上

64. at home 兰州市,在全国

65. at intervals 正确,每隔...

66. at large 几,不被归案的

67. at last 终

68. at least 顶

69. at length 终极,终

70. at most 顶,不跨过

71. at no time 从不,决不

72. at one time 已经,一度;除这样

73. at present 就目前来说,,现在

74. at someone's disposal 任...淬火

75. at the cost of 以...为人民币

76. at the mercy of 既...设置

77. at the moment 现如今,就目前来说,

78. at this rate 照此较快

79. at times 有的时候,偶尔

80. aware of 知道到

81. back and forth 往返地,反复地

82. back of 在...后面

83. back up 后备,吃偏饭

84. bare of 简直没有,不懂

85. be able to do 应该

86. be around 险

87. be available to sb. 适宜,可供

88. be bound to 绝对

89. be capable of doing 应该

90. be concerned with 熟悉…,进出…

91. be dying to 期待

92. be fed up with 受够了be tired of

93. be in hospital 住院

94. be in season 变的/in peak season淡季

95. be in the mood to do sth. 想做

96. be pressed for time工夫不敷

97. be tied up with忙碌

98. be under the weather 自身状况欠好

99. beat around the bush 弯没角

100. beat the crowd 杜绝基因者