How do you operate this camera?这架相机怎么用？

A massive rock fall trapped the men as they operated a tunnelling machine.一块坠落的巨石困住了操作隧道挖掘机的工人。

He operated an enormous pear orchard.他经营一个大型梨园。

Britain operated a system of severely punitive laws.英国实施了一套极为严格的惩罚性法律体系。

Ceiling and wall lights can operate independently.顶灯和壁灯能单独开关。

How do accounting records operate?账目是如何记录的？

I don't know how the electoral system operates in France.我不知道法国的选举制度是如何运转的。

Calculators and computers operate on the same principle.计算器和电脑的运行原理相同。

They operated but it was too late.他们做了手术, 但为时已晚。