名词操作;运行;手术;运作网络运营;运算;运转
名词
1. The general was in command of operations in the north.
将军负责指挥北方的作战行动。
2. The operation of this machine is simple.
这个机器的操作很简单。
3. The rescue operation lasted three days.
救援活动持续了三天。
4. When does the law come into operation?
新的法律什么时候生效?
5. The operation of natural law is constant.
自然法则的作用是永恒的。