let down片语动词KK [lɛt daʊn] /lɛt daʊn/发音片语动词1使失望、令…失望、辜负可拆开I promised to help, and I won't let you down.我答应过要帮忙,绝不会让你失望。2放下、降下可拆开She let down the blinds to keep the afternoon sun out.她把百叶窗放下,挡住午后的阳光。3放长、加长可拆开The tailor let down the hem of the trousers two inches.裁缝把裤脚放长了两英寸。4放掉气、泄气可拆开Someone let down the tires on my bike overnight.有人在半夜把我自行车的轮胎放了气。用这个字练口说→