1. U 操作，运转，经营　 the condition or process of working
2. C 手术　 the cutting of the body in order to set right or remove a diseased part
3. C （军事）行动，活动　a planned, especially military movement
4. C 运算　 a process used to get one mathematical expression or figure from others

　begin ～s　开始军事演习
　bring a factory into ～　将工厂投入生产
　come into ～　开始生效
　conduct an ～　进行演习作战
　go into ～　开始工作，实施，生效
　have an ～　做过手术
　perform an ～　做手术，进行手术
　put into ～　实施，施行，投入生产
　put a law into ～　实施法律
　recover from an ～　手术后恢复健康
　arithmetical ～s　算术运算
　combined ～s　联合作战
　effective ～　有效的作用
　heavy ～　大手术
　large-scale ～s　大规模作战
　major ～　大手术
　minor ～　小手术
　serious ～　重大的手术
　slight ～　微小的手术
　successful ～　成功的手术
　black market ～s　黑市交易
　drilling ～s　演习
　land ～　陆地战
　rescue ～　救援活动
　sting ～　（秘密警察为逮捕罪犯而）精心设计的行动
　in ～　操作中，运转中，实施中，生效
　in full ～　全面实施
　plan of ～s　作战计划
　theater of ～s　战区
　out of ～　停止运转
　～ for　为…做的手术
　～ on a large scale　大规模地进行军事演习
　～ on leg　腿上的手术
　～ on the head　头部开刀
　～ in arithmetic　数学的运算
　～ in tea　茶叶交易

　They were also given the opportunity to do some operations.　他们也有机会亲自去操作。
　The difficult operation will exact all the doctor's skill.　这困难的手术将需要这位医生拿出全部本领来。
　The operation unavoidably caused the patient much pain.　手术不免会导致病人更多的疼痛。
　The young nurse was very nervous when she assisted at her first operation.　这位年轻的女护士首次当手术助手时，心情非常紧张。
　You'll be glad to get your operation over.　你做完手术就会高兴了。
　It was not the operation, but the fever that followed, which finished him off.　不是手术，而是手术后的发烧使他死亡的。
　The patient is coming along well after the operation.　手术后病人健康状况良好。
　Then he bent over the patient to start the operation.　然后他俯身开始给病人做手术。
　We must coordinate our operations with theirs.　我们必须使我们的军事行动和他们的协调一致。
　The operation caused serious concern to the Government.　局势引起政府的严重不安。
　This will enhance our operation effectiveness.　这会提高我们的工作效率。

 ♣ be in operation　
　实施中　carry out
　The school has now been in operation for several days.　学校开学已经好几天了。
　It's often easier to make plans than it is in operation.　制订计划常比执行计划容易些。
 ♣ come into operation　
　生效　make sth such as a law to begin to come into effect
　The new law will come into operation by midnight tomorrow.　新法律于明日午夜生效。
　The new currency regulations of the government are going to come into operation.　政府的新币规定将生效。
 ♣ put into operation　
　使处于某种状态　make sth be in a state of
　It's a wonderful scheme, and he's just the man to put it into operation.　这是一个很好的计划，而他正是实施这个计划的人选。
　The regulations have been put into operation on a trial basis.　这些规定已开始试行。

 ♣ operation, act, action, deed
　参见act条。

　这孩子得做手术。
　［误］ The child has got to do an operation.
　［误］ The child has got to make an operation.
　［正］ The child has got to have an operation.
　［正］ The child has got to perform an operation.
　［析］ “做手术”是have〔perform〕 an operation，不可以说do〔make〕 an operation.

　［同义词］ action, activity, affair, course, deal, effect, exercise, force, process, use, working