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