emptydocn.空文档(empty document的缩写)emptyadj.空的；空洞的；空虚的；空腹的v.倒空；变空；排空n.空物empty status packet空状态组empty one but static虚壹而静empty car principles配空原则empty ... from把 ... 从 ... 倒出empty and load valve空重车转换阀Empty closed therapy空管封闭疗法empty sella syndrome空蝶鞍综合征empty talk of WeiJin魏晋清谈empty coconut shells空的椰子壳empty car scheduling空车调度