211. be on duty 值班, 值日, 在上班時(shí)
    212. be in duty bound to (do) (=be required by one’s job or esp. by conscience) 有義務(wù)(做)
    213. be eager for 想得到, 盼望
    214. by ear (=play music from memory without having seen it printed) 憑記憶,不看樂譜
    215. have an ear for (=have keen recognition of sounds esp. in music and language)對..有鑒賞力
    216. a word in one’s ear 私房話, 秘密話
    217. on earth 究竟, 到底, 全然
    218. with ease ( = easily) 容易, 不費(fèi)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)使某人感到無拘束
    221. economize on (=save sth. instead of being wasteful) 節(jié)省
    222. have an effect on 對…有影響
    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) 實(shí)際上
    226. give effect to (=carry out) 實(shí)行,使…生效
    227. to no effect 不起作用,沒有取得任何效果
    228. (be) of no effect (=useless) 無效
    229. to the effect that 大意是…,主要內(nèi)容是…
    230. to that effect 是那個(gè)意思的…
    231. emerge from ( =appear, become known ) 出現(xiàn), 暴露(問題. 意見等)
    232. place(or put, lay) an emphasis on 強(qiáng)調(diào), 把重點(diǎn)放在…上
    233. encourage sb. in 鼓勵(lì); encourage sb. in hisher work 鼓勵(lì)某人工作; encourage sb. in hisher idleness 慫恿某人游手好閑
    234. encourage sb. in …with sth. 用…鼓勵(lì)某人做某事
    235. on end (=continuously) 連續(xù)地
    236. (be) at an end (=finished) 結(jié)束了
    237. no end of (=very manymuch) 很多,大量
    238. in the end (=finally, eventually) 最終
    239. at one’s wit’s end (=not knowing what to do or to say) 無法可想, 智窮計(jì)盡
    240. end up with 以…而結(jié)束