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 hisher work 鼓励某人工作;encourage sb. in hisher 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 manymuch)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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