fail是什么意思（fail）

1、fail [feil]vi.失败, 没做成某事, 表现欠佳, 用完, 衰退 vt.辜负, 放弃, 缺少, 不及格 n.不及格, 没做成 例句和用法：1.Several banks failed during the depression.有几家银行在不景气时期倒闭了。 2、2.He never fails to write to his mother every week...