51. as luck would have it 不巧 As luck would have it there was no one home so I had to wait another 45 minutes for the next bus.
52. as sth go 就...而言 Often called the wanderer流浪者, it is tough and powerful as butterflies go and is capable of long flights at speeds of 20 miles per hour or more.
53. aside from 除...以外 Aside from this course, I’m taking modern Asian politics and advanced Japanese.
54. ask for ask for a loan borrow money from
55. assume sth to be true
56. at an angle / remain rigid and still 有一定角度 /僵硬不动 The worm stretches its body away from the branch at an angle and remains rigid and still, until the danger has passed.
57. at hand near in place or time
58. at home 感到自在 I certainly hope that most of you will soon feel right at home with our group.
59. at intervals 断断续续 Homer worked on画 Breezing Up 微风习习 at intervals over a period of three years.
60. at one’s pleasure These advisers serve at the President’s pleasure and can be fired at any time.
61. at sb’s service willing to help sb W: Phil, could you give me a hand with this file cabinet帮我搬文件柜? It belongs against the wall应该靠墙放next to the bulletin board. M: At your service.
62. at the crack of dawn I’m getting up at the crack of dawn (破晓).
63. at the dedication of Abraham Lincoln delivered his most famous address at the dedication of the soldiers cemetery in Gettysburg.
64. at the mercy of Without any protection against. helpless before They are drifting in an open boat, at the mercy of the elements.
65. at the spanking rate 急速 As the Sun grows older, and uses up its hydrogen fuel氢燃料-which it is now doing at the spanking rate of half a billion tons a second-it will become steadily colder and redder.
66. at the suggestion of sb 在…建议下 It was at the suggestion of her acting coach表演教练 that the youngster, who was, by her own admission, clumsy笨拙, shapeless无体形, and on the heavy side, enrolled被收入 in a dancing class.
67. at the tip of at the pointed end of
68. at the top of We’re almost at the top of the hill.
69. at times The planning function may at times be less comprehensive.
70. at will 任意 On the contrary, individuals move about at will, alone or in small groups best described as bands伙, which sometimes form into large aggregations (groups).
71. attach to tie, connect. fasten The virus replicates by attaching to a cell and injecting its nucleic acid. We have to cover ourselves up so that baby cranes will not become attached to us.
72. attribute sth to sb consider as resulting from, proper to, or belonging to a person or thing Soldiers rarely hold the ideals that movies attribute to them, nor do ordinary citizens devote their lives to unselfish service of humanity.
73. back and forth Mostly I’ll just be using the bike to get me back and forth from work.
74. back up To cause to accumulate or undergo accumulation 使聚集引起堆积或经过积累 The accident backed the traffic up for blocks. Traffic backed up in the tunnel. 事故引起了交通阻塞。在地下道中引起了交通阻塞.
75. be … short W: I found the perfect book bag, but I am about 20 dollars short (缺20元).
76. be absolved in sth 沉浸 I spent the whole weekend totally absolved in this biography.
77. be accessible to sb Easily approached or entered The national park is accessible to everyone.
78. be accountable to sb 负责 Powerful railroad barons (大王) made fortunes without having to be accountable to the public or considerate (关心) of customers.
79. be accustomed to To familiarize, as by constant practice, use, or habit I have accustomed myself to working long hours.
80. be adapted to Bloodhounds are biologically adapted to trailing their prey.
81. be adept at be good at Crows are adept at avoiding researchers.
82. be allergic to sth Having a dislike. averse Dan is allergic to cats.
83. be around 在附近 M: Is Sally still around? I was going to ask her if she wanted to walk to class with me.
84. be associated with 与相联系 The process is associated with the formation and melting融化 of sea ice.
85. be at risk Pains are sure sign that your hearing is at risk.