同根派生 sign over相关词英汉例句The top floor of the building was signed over for use as offices.大楼的顶层已签约售出作为办公室之用。He nailed up a sign over the door which said: "No Admittance."他在门上钉了一块牌子,上面写着:“禁止入内”。sign over更多例句