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201.(be) distinct from ( = be different from) 与截然不同
202.distinguish between (=make or recognize differences) 辨别
203.distinguish...from 把与区别开
204.do away with (=get rid of; abolish; discard eliminate ) 除去，废除，取消; do away with (=kill) 杀掉，镇压
205.have...to do with 与有关系
206.without doubt (=undoubtedly) 无可置疑地
207.in doubt (=in a condition of uncertainty ) 对表示疑惑
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 ones 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 ones 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 (ones) 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 ones wits 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