/feɪl ||; fel/verb1 [I,T] to not be successful in sth 失败 · She failed her driving test. 她驾驶考试不及格。I feel that I've failed -- I'm 25 and I still haven't got a steady job. 我觉得自己真没出息──25岁了，还没有找到一份固定的工作。 ☞Look at pass and succeed. 参看pass及succeed。
2 [T] to decide that sb is not successful in a test, exam, etc 评定某人考试不及格: The examiners failed half of the candidates. 主考官评定半数应试者不及格。 [OPP] pass 反义词为pass
3 [I] fail to do sth to not do sth 没有做（某事）: She never fails to do her homework. 她从来没有不做功课。
4 [I,T] to not be enough or not do what people are expecting or wanting 缺乏；满足不了（要求或期望）: If the crops fail, people will starve. 如果作物歉收，人们就要挨饿了。I think the government has failed us. 依我看，是政府辜负了我们。
5 [I] (used about health, eyesight, etc) to become weak （指健康、视力等）衰退: His health is failing. 他的身体一天不如一天。
6 [I] to stop working 失灵；失去作用: My brakes failed on the hill but I managed to stop the car. 在坡路的时候剎车坏了，但我终于使汽车停下来。