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

• recognition [,rekəg´niʃən] n.认出；认识；承认 (初中英语单词)
• emerge [i´mə:dʒ] vi.出现；显露；暴露 (初中英语单词)
• encourage [in´kʌridʒ] vt.鼓励；怂勇；促进 (初中英语单词)
• knowing [´nəuiŋ] a.会意的，心照不宣的 (初中英语单词)
• emphasis [´emfəsis] n.强调；重点 (高中英语单词)