n.[C]

1. 操作者，技工
2. 司机
3. 接线员
   He dialed the operator.

   他拨通了接线员。

4. 施行手术的医生
5. （企业）经营者
6. 精明圆滑的人
7. 【数】（运）算子，算符

n.

1. a person who operates equipment or a machine.
   ▸a person who works at the switchboard of a telephone exchange.
2. a person or company that runs a business or enterprise:
   a tour operator.
3. informal a person who acts in a specified, especially manipulative, way:
   a smooth operator.
4. Mathematics  a symbol or function denoting an operation (e.g. ×, +).