supervisory lamp

例句：

1. 1. The supervisory lamp is used to monitor the production process.
   监督灯用于监控生产过程。
2. 2. The supervisory lamp was installed in the factory to ensure safety.
   监督灯被安装在工厂以确保安全。
3. 3. The supervisory lamp helps to improve efficiency by providing clear and concise instructions.
   监督灯通过提供清晰和简洁的指示来提高效率。