悬挂弹簧平衡器时，务必连接好保险绳。

While hanging the balancer, you must join the insurance rope well.

youdao

我想我是把艾瑞克当成了一根保险绳吧，万一哪天我又跟戴维走不下去了呢？

I think I sort of kept Eric around for insurance purposes, just in case things didn't end up well with Dave.

youdao

这也就是说，即便电梯厢本身的5根钢绳全部拆除，因为有一上一下的双保险，电梯也不会发生坠落。

This means that even if the car itself 5 steel rope off completely, because the one on the double insurance, the elevator will not fall.

youdao