271. at the expense of在损害情况下,以为牺牲 272. exposeto使暴露于,使受(危险,风险) 273. be exposed to面临,受到 274. beyond expression(=in a manner that cannot be expressed)无法形容,说不出的 275. give expression to表达,表现find expression in表现 276. toextent在程度上 277. in the extreme(= extremely)极其 278. look sb. in the eye正视,打量(某人) 279. close(shut)ones eyes to不理会,视而不见 280. in ones minds eye在心目中,在想象中 281. in the twinkling of an eye一眨眼,转眼间 282. keep an eye on(=keep a watch on)照看,监视 283. in the eyes of in ones eyes(= in the judgment of)在某人看来,在某人眼里 284. on the face of it(=judging by what one can see)表面看来 285. in the face of面对着(困难等情况)