operator
/ˈɒpəreɪtə(r)/noun
1
- often with modifier a person who operates equipment or a machine（设备、机器的）操作员：
a radio operator.
无线电操作员。
1.1
- （一般作the operator）a person who works at the switchboard of a telephone exchange（电话）接线员。
2
- usu. with modifier a person or company that engages in or runs a business or enterprise经营者：
a tour operator.
旅行社。
3
- with adj. informal a person who acts in a specified, especially manipulative, way〈非正式〉操纵者：
her reputation as a cool, clever operator.
她作为一个冷静、聪明的操纵者的名声。
4
- Mathematics a symbol or function denoting an operation (e.g. ×, +)【数】运算符号（如×, +）。