operation/ɔpəˈreɪʃ(ə)n/
n.1. 操作法;作业;工作The operation of a sewing-machine is easy.缝纫机容易操作。
The skilful operation of a computer is hard to learn.学会熟练地操作电脑是不容易习得的。
2. 生效;作用When does the law come into operation?新的法律什么时候生效?
3. 作战行动;军事演习the army's operations军事行动
Operation Sea 93海洋九三行动(行动代号)
4. 行动,活动5. 手术a operation on her stomach给她的胃动的手术
(= op)6. 运算,演算