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220. put sb. at his / her ease (=free sb. from worry or nervousness)使某人感到無拘束

219. at (one’s) ease ( = without worry or nervousness) 自在,不拘束

218. with ease ( = easily) 容易, 不費力

217. on earth 究竟, 到底, 全然

216. a word in one’s ear 私房話, 秘密話

215. have an ear for (=have keen recognition of sounds esp. in music and language)對..有鑒賞力

214. by ear (=play music from memory without having seen it printed) 憑記憶,不看樂譜

213. be eager for 想得到, 盼望

212. be in duty bound to (do) (=be required by one’s job or esp. by conscience) 有義務(wù)(做)

211. be on duty 值班, 值日, 在上班時