The ink works by creating something like an electric circuit on the skin.

墨水的工作原理是在皮肤上产生类似电路的东西。

Both use an external input to complete their electric circuits.

两者都使用外部输入来完成其电路。

When something pushes hard enough, the layers connect, completing the electric circuit.

当有足够大的力量推动时， 各层就会连接起来，完成电路。

They make contact with the non-metal part of an electric circuit (those protein wires).

它们与电路的非金属部分（那些线）接触。

You took a slice of a silicon disk and printed on top of it in absolutely minuscule form circuits and little electric circuits with transistors and wires.

你拿了一片硅盘， 在上面印上了绝对微小的电路和带有晶体管和电线的小电路。