supervision of train timing

例句：

1. 1. The company's supervisor is responsible for overseeing theproduction process.
   公司的监督员负责监督生产过程。
2. 2.The manager has to supervise theworkers during the construction period.
   经理在建设期间必须监督工人。
3. 3. The supervisor made sureall the equipment was in good working orderbefore the project started.
   监督员确保所有设备在项目开始前都处于良好工作状态。