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) 实际上来源：www.examda.com 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 251. (be) equivalent to(=equal in value, amount, meaning) 相等于, 相当于 252. in essence (=in its/one’s nature) 本质上 253. at all events (=in spite of everything, in any case) 不论怎样, 无论如何 254. in any event (=whatever happens in the future) 无论如何, 不管(将来)怎么样 255. in the event that(=if) 假如, 如果. in the event 结果, 实际情况是(常与but连用) 256. in the event of(=in case of)万一,即使发生..时 257. except 除…以外. besides 除…以外还有.. 258. except (=but) 除了。 259. except for (=apart from) 除…以外 260. (an) exception to …的例外 261. with the exception of (=except, apart from) 除去…., 除…以外 262. in excess of (=more than) 超过 263. exchange…for 以…交换 264. exclusive of (=not taking into account. without) 不包括 265. in excuse of 作为…的借口