vacantadj.空虚的;空的;木然的
vacant time slot pattern空时隙型
vacant premises exemption空置物业豁免
vacant lattice point model空格点模型
vacant tenement inspection视察空置物业
vacant national number signal国内空号信号
Vacant units of factory buildings工厂大厦的空置单位
Vacant Space of Commercial Buildings空置商品房面积