fall down片语动词KK [fɔl daʊn] /fɔl daʊn/发音片语动词1跌倒、摔倒She slipped on the wet floor and fell down.她在湿滑的地板上一滑就跌倒了。2倒塌、塌下The old barn finally fell down during the storm.那座旧谷仓终于在暴风雨中倒塌了。3站不住脚、失败、出问题The argument falls down when you examine the actual numbers.一旦细看实际数字,这个论点就站不住脚了。4失职、没做好常与 on 连用The company fell down on customer service last year.公司去年在客户服务方面做得很不到位。用这个字练口说→