Unlike copper cables, which transmit electrical energy, fiber optic cables transmit light.

而同只能传输电能的铜线缆不同的是，光缆可以传输光。

But how to protect the copper cables from the sea?

但是如何保护铜电缆不受海水的影响呢？

And, behold, they found clippers, gloves, a torch and 24kg (53lbs) of copper cable.

您瞧！警察在包里发现了剪刀，手套，手电，还有重达24千克（53磅）的铜电缆。