柯林斯词典nod off (nodding,nodded,nods) 1. PHRASAL VERB If you nod off, you fall asleep, especially when you had not intended to. 打瞌睡[非正式] The judge appeared to nod off yesterday while a witness was being cross-examined. 昨天当一名证人被盘问时，法官好像在打瞌睡。 返回 nod off