51 in no case 在任何情况下都不 52 be cautious of 谨防 53 center ones attention on
52.be cautious of 谨防
53.center ones attention on 把某人的注意力集中在上
54.be certain of 有把握,一定。
55.for certain of 肯定地,有把握地
56.attach 缚,系,结
57. make an attempt at doing sth. 试图做
58.attend to 注意,照顾;attend on 侍候,照料
59.attribute to/ toward 对的态度、看法
60.attributeto 把归因于,认为是的结果
61.on the average 平均
62. aware of 意识到,知道
63.at the back of 在后面
64.in the back of 在后部;on the back of 在后部;be on ones back 卧病不起
65. at ones back 支持,维护;have sb. at ones back 有支持,有作后台
66.turn ones back on sb. 不理睬,背弃,抛弃
67.behind ones back 背着某人
68.be based on/upon 基于
69.on the basis of 根据,在基础上
70.beatat 在运动项目上打赢
71.begin with 以开始。to begin with 首先,第一
72.on behalf of 以名义
73.believe in 相信,依赖,信仰
74.benefit 受益,得到好处。
75.for the benefit of 为了的利益
76.for the better 好转
77.get the better of 打败,胜过
78.by birth 在出生上,论出身,按血统 at birth 在出生时;give birth to 出生
79.blame sb. for sth. 因责备某人
blame sth. on sb. 把推在某人身上
80.in blossom 开花be in blossom 开花come into blossom 开花
81.on board 到船上,在船上,上火车或飞机
82.boast of 吹嘘
83.out of breath 喘不过气来
84.in brief 简言之
85.in bulk成批地,不散装的
86.take the floor 起立发言
87.on business 出差办事
88.be busy with sth. 于某事
be busy doing sth. 忙于做某事
89.last but one 倒数第二
90.but for 要不是。表示假设
91.buy sth. formoney 用多少钱买
92.be capable of 能够,有能力
be capable of being + 过去分词:是能够被的
93.in any case 无论如何
94.in case 万一
95.in case of 如果发生万一
in the case of 至于,就而言
96.arise from 由引起
97.arrange for sb./sth. to do sth. 安排做
98.arrive on到达;arrive at 到达某地;得出,作出;arrive in 到达某地;
99.be ashamed of 以为羞耻
100. assure sb. of sth. 向保证,使确信
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