监督者

例句：

1. 1.The supervisor is responsible for ensuring the safety of the workers.
   监督者负责确保工人的安全。
2. 2.The manager has been promoted to a higher position in the company.
   经理已被提升到公司更高的职位。
3. 3. The controller is in charge of monitoring the production process.
   控制器负责监控生产过程。