短语词组短语knock lightly at the door 轻轻敲门knock k at the door 敲门to knock at the door 敲门;叫门knock at the wrong door 找错对象a knock at the door 敲门声;一个敲门声I Knock At The Door 我敲门knock audio -videoailable at the door 敲门 返回 knock at the door