短语词组短语trade -in value 以旧换新抵价;抵换价值;易新价值;折价物trade n in trade 拿到执照trade expand in g 贸易扩张Trade fairs in China 中国展览计划Trade Name in Tiajin 天津商名trade fill in 换填assets trade -in 资产整体置换 返回 trade in