保险开关

例句：

1. 1. The engineer found the safety switch and turned it off immediately.
   工程师发现安全开关并立即关闭了它。
2. 2. The car's safety switch is located in the dashboard.
   汽车的安全开关位于仪表盘上。
3. 3. Before starting the engine, make sure the safety switch is engaged.
   启动发动机前，请确保安全开关已激活。