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56. attach(to) (=to fix, fasten; join) 缚, 系 ,结
57. make an attempt at doing sth. (to do sth.) 试图做…
58. attend to (=give one’s attention, care and thought)注意,照顾;attend on(upon)(=wait upon, serve, look after) 侍候,照料
59. attitude to toward …对…的态度.看法
60. attribute…to…(=to believe sth. to be the result of…)把..归因于.., 觉得..是..的结果
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,了解.
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, 有…作后台
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 通过…, 在…基础上
70. beat…at 在…运动项目上打赢
