an instance of buying or selling something; a business deal 交易;业务 in an ordinary commercial transaction a delivery date is essential. 在普通商业交易中,交货期至关重要。 ■[mass noun]the action of conducting business 交易行为 ■an exchange or interaction between people (人与人之间的)交流,相互影响 intellectual transactions in the classroom. 课堂上的知识交流。 ■(transactions)published reports of proceedings at the meetings of a learned society (学术团体会议的)议事录,公报 ■an input message to a computer system that must be dealt with as a single unit of work 事务(元),事项