fail-safe
adjective/ˈfeɪl seɪf/
/ˈfeɪl seɪf/
[usually before noun]- (of machinery or equipment) designed to stop working if anything goes wrong
有自动保险装置的;具有自动防止故障性能的 - a fail-safe device/mechanism/system
故障保护装置/机械装置/系统
- a fail-safe device/mechanism/system