2018考研英语备考：历年考研高频词组（5）
61. on the average (=on average, on an average) 平均62. (be) aware of (=be conscious of , having knowledge or consciousness)意识到,知道.
63. at the back of (=behind) 在…后面
64. in the back of 在…后部(里面);on the back of 在…后部(外面);
be on one’s back(=be ill in bed) 卧病不起
65. at one’s back(=supporting or favoring sb.)支持,维护;have sb.at one’s back 有…支持
66.turn one’s back on sb.(=turn away from sb. in an impolite way) 不理睬(某人),背弃,抛弃
67. behind one’s back 背着某人(说坏话)
68. be based on / upon 基于
69. on the basis of 根据…, 在…基础上
70. beat…at 在…运动项目上打赢
71. begin with 以…开始. to begin with (=first of all) 首先, 第一(经常用于开始语)
72. on behalf of (=as the representative of) 以…名义
73. believe in(=have faith or trust in; consider sth./sb. to be true) 相信,依赖,信仰.
74. benefit (from) 受益,得到好处.
75. for the benefit of 为了…的利益(好处)
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