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