Picture a wire lying on the floor. It looks like any other wire — same colour, same thickness, nothing moving. But the current is on inside it, and the moment you touch it something jumps. That hidden, switched-on energy is the whole picture, and it is why the word works both for cables and for people.
可以想成一條躺在地上的電線。它跟旁邊那條看起來一模一樣：同樣的顏色、同樣的粗細，也沒有在動。但它裡面的電是開著的，手一碰，整個人就彈一下。重點就在那股「看不出來、但正在運轉」的能量。抓住這個畫面，後面用來講人的說法就不必另外背了。
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