61.on the average (=on average, on an average) 平均 6 b7 T4 t2 Y7 j 62.(be) aware of (=be conscious of, having knowledge or consciousness) 意识到,知道 ! i# ]+ U0 |; N! H. G6 F 63.at the back of (=behind) 在……后面 0 W& Y8 j( C& b 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 9 C% a1 @# x. j% w+ B6 H 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 # V9 W. r9 a) C3 L 66.turn one‘s back on sb. (=turn away from sb. in an impolite way) 不理睬(某人),背弃,抛弃 3 n. I5 t; J7 L) J0 X% _ 67.behind one‘s back 背着某人(说坏话)4 U4 c7 t! q# U: J7 T& f
68.be based on/upon 基于 9 W- C' `9 @* D, B1 z 69.on the basis of 根据……,在……基础上 ; @5 o% _1 A( v4 H 70.beat……at 在……运动项目上打赢