operator

A person who works or controls a machine, vehicle, or system.

操作员（操作机器、车辆或系统的人）。

A person who connects telephone calls or provides phone services; a company providing a service.

电话接线员；（提供服务的）运营商。

A symbol or function representing a mathematical or logical operation.

（数学、逻辑的）运算符。