271. at the expense of在损害…情况下,以…为牺牲
272. expose…to…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. to…extent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)one's eyes to不理会,视而不见
280. in one's mind's 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 one's 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)
286. in one's face当着某人的面;face to faced面对面;face up to大胆面向
287. fail in(=be unsuccessful in)失败
288. in good faith(=honestly,sincerely)真诚地
289. keep faith with对…守信用
290. lose faith in对…失去信心
291. on faith毫无怀疑地,依赖地
292. faithful to(=loyal to)对…忠诚
293. fall into the habit(of)养成…习惯
294. fall short of(=fail to reach a desired result,standard,etc.)没达到,低于
295. familiar with熟悉,了解
296. have a fancy for(=like sth. without the help of reason)(没有道理地)喜欢,想要
297. take a fancy to(=become fond of)喜欢
298. by far远,非常(与比较级或最高级连用)
299. far from远远不是
300. far from非但不…(而且)