trade upvi.买更高价的东西；以旧换新traden.贸易；交易；行业；同行；顾客；营业额；交易量v.做生意；从事贸易；购物；营业；(在证券交易所)交易；交换trade-off hypothesis矫枉失衡学说trade diversion effect转移贸易作用trade-off-decisionn.折衷决策Trade Incentive System出口贸易奖励制trade of legal service律师服务贸易trade and human rights贸易与人权trade names privileges商号权trade-wind inversion信风逆温trade and defense ties贸易和防务关系trade capital movement商业资本流动