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211.be on duty 值班,值日,在上班时

212.be in duty bound to (do) (=be required by one"s job or esp. by conscience)有义务(做)213.be eager for 想得到,盼望

214.by ear (=play music from memory without having seen it printed)凭记忆,不看乐谱

215.have an ear for (=have keen recognition of sounds esp. in music and language)对..有鉴赏力

216.a word in one"s ear 私房话 秘密话

217.on earth 究竟 到底 全然

218.with ease (=easily)容易,不费力

219.at (one"s) ease (=without worry or nervousness)自在,不拘束

220.put sb. at his / her ease (=free sb. from worry or nervousness) 使某人感到无拘束

221.economize on (=save sth. instead of being wasteful)节省

222.have an effect on 对…有影响

223.be in effect (=be in operation)有效

224.go into effect 生效. (近: come into effect; take effect; be brought into effect)

225.in effect (=in fact, really)实际上

226.give effect to (=carry out)实行,使…生效

227.to no effect 不起作用 没有取得任何效果

228.(be) of no effect (=useless)无效

229.to the effect that 大意是 主要内容是

230.to that effect 是那个意思的…

231.emerge from (=appear, become known)出现,暴露(问题.意见等)

232.place (or put, lay) an emphasis on 强调,把重点放在…上

233.encourage sb. in 鼓励; encourage sb. in his/her work 鼓励某人工作;

encourage sb. inhis/her idleness 怂恿某人游手好闲

234.encourage sb. in …with sth.用…鼓励某人做某事

235.on end (=continuously)连续地

236.(be) at an end (=finished)结束了

237.no end of (=very many/much)很多,大量

238.in the end (=finally, eventually)最终

239.at one"s wit"s end (=not knowing what to do or to say)无法可想,智穷计尽

240.end up with 以…而结束

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