keep sth back

(a) prevent sth from moving; restrain sth 使某事物不能移动; 阻止某事物: Millions of gallons of water are kept back by the dam. 这个堤坝拦住了滔滔的洪水. * She was unable to keep back her tears. 她无法忍住泪水. (b) not pay sth to sb 不将某物付给某人: A certain percentage of your salary is kept back by your employer as an insurance payment. 雇主扣下你部分薪金作保险金用. keep sth `back (from sb) refuse to tell sb sth; hold sth back 拒不将某事告诉某人; 隐瞒某事物: I'm sure she's keeping something back (from us). 我肯定她（向我们）隐瞒　什麽. keep (sb) `back (from sb/sth) (cause sb to) remain at a distance from sb/sth （使某人）与某人[某事物]保持距离: Keep well back from the road. 离马路远些. * Barricades were erected to keep back the crowds. 设置了障碍以隔开人群.

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