[safety device] 可以使设备不出危险和免受损失的装置
这部照相机内部有故障保险装置,可以令照相机在未接收到正确信号时无法运行。
The camera has a built-in failsafe device which prevents it from working if the right signals aren't received.
保险丝起着保险装置的作用。
他的车刚装了预防刹车失灵的保险装置。
He has just installed a safety device for his car in case of break failure.
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