transaction 作名词．处理,办理,执行；(一笔)交易; (一项)事务trade n.贸易,商业；行业,生意；谋生手段,手艺,职业；同仁,同行；〈美〉顾客 vt.& vi.交易; 经商 名词 n.1.贸易,商业 Transport has always been the ke...