201.have……to do with 与……有关系

202.without doubt (=undoubtedly) 无可置疑地

203.in doubt (=in a condition of uncertainty ) 对……表示疑惑

204.(be) distinct from ( = be different from) 与……截然不同

205.distinguish between (=make or recognize differences) 辨别

206.distinguish……from 把……与……区别开

207.do away with (=get rid of; abolish; discard eliminate ) 除去，废除，取消; do away with (=kill) 杀掉，镇压

208.be due to 是由于

209.come off duty 下班

210.go on duty 上班

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. in his/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

241.come to and end (=finish) 结束

242.end in 以……为结束

243.engage in 或be engaged in 忙于，从事

244.enter for (=put the name on a list for) 报名参加

245.enter into (=begin) 开始(谈话，谈判等)

246.enter on / upon (=begin) 开始(一个时代，一种生涯，一段任期等)

247.be entitled to (=be given the right to do sth.) 有权……，有资格……

248.be equal to 等于

249.be/ feel equal to (=have enough strength， ability etc.) (某人)能胜任，能应付

on equal terms (=on and equal footing) 平等地

250.be equipped with 装备有，装有

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