267.exert oneself to do sth.努力，使劲
268.come into existence (=begin to exist)开始存在；come into use开始使用；come into effect开始运转；come into fashion开始时新；come into action开始行动；come into power开始执政；come into sight进入视野；come into blossom开花；
269.(be) in existence存在come into existence出现
270.expect……of在……期望……
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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) 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)
286.in ones 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)