[] a business involving many parts（包括许多部分的）企业◆a huge multinational operation庞大的跨国公司◆Some smaller operations are having trouble getting funding.有些小企业筹资遇到困难。 [] the activity or work done in an area of business or industry（工商业）活动，业务◆the firm's banking operations overseas公司的海外银行业务◆insurance/manufacturing/retail operations保险／制造／零售业务operations [; ]the main activities that a business does to make money, for example buying and selling goods or services, or manufacturing products经营；业务◆The company is seeking more funds to finance its operations.这家公司正在寻求更多的资金来发展业务。◆I've always worked in operations.我一直干业务工作。 [, ]the process of working as a business（企业）运作，营运◆We hope to break even in our fourth year of operation.我们希望在第四个营运年度收支持平。◆The steelmaker suspended operations in 2001.这家钢铁制造厂于 2001 年停产。 [, ]an act performed by a machine, especially a computer运算；运作◆The whole operation is performed in less than three seconds.全部运算在三秒内完成。 [] the way that parts of a machine or a system work; the process of making sth work运转；运行；操作◆Regular servicing guarantees the smooth operation of the engine.定期维护保证了发动机的顺利运转。 [] an organized activity that involves several people doing different things（有组织的）活动，行动◆a security operation安全行动●come into opeˈrationto start working; to start having an effect开始工作；开始生效◆The new rules come into operation next week.新规则从下周开始实施。●in opeˈrationworking, being used or having an effect工作中；使用中；有效◆The system has been in operation for six months.这个系统已运行了六个月。●put sth into opeˈrationto make sth start working; to start using sth实施；施行；启用◆It's time to put our plan into operation.该是执行我们计划的时候了。holding operation