fail-safe control

例句：

1. 1. The system has a fail-safe control to prevent any unauthorized access.
   该系统具有安全失败控制以防止未经授权的访问。
2. 2. In the event of a power failure, the fail-safe control will automatically switch to backup power.
   在电力故障的情况下，安全失败控制将自动切换到备用电源。
3. 3. The engineers implemented a fail-safe control system to ensure the safety of the workers during emergency shutdowns.
   工程师们实施了一个安全失败控制系统，以确保在紧急停机期间工人的安全。