When you touch them to your tongue, on the other hand, your saliva has no trouble completing the circuit.

再者，当你用舌头舔它们的时候，你的唾液就会接通电路。

If the anode is at a slightly higher positive potential, the electrons are attracted to it, completing the circuit.

如果阳极处于稍高的正电位，电子就会被吸引到它上面，从而完成电路。

And sure enough, once you complete the circuit, you can see that the bulbs are less bright than the original, single-bulb circuit.

果然，一旦你完成了电路，你会发现灯泡比原来的单灯泡电路更亮。

When current flows through the coil, an electromagnetic field is created, which in turn, attracts a metal arm inside the relay, snapping it shut and completing the circuit.

当电流流过线圈，电磁场就产生了它吸引继电器内的金属臂，导致电路闭合。

Let's say we have a 9 Volt battery, and we want to know how much current it supplies to a light bulb when we complete the circuit.

假设我们有一个 9 伏的电池，并且我们想知道当我们完成电路时有多少电量传送到灯泡。

When a squirrel shuts down the power in this way, the act is fatal to the squirrel itself, whose body becomes a conduit through which high voltage passes to complete the circuit to the ground.

当松鼠以这种方式切断电源时，这种行为对它本身来说很致命，它的身体变成了一个管道，高压通过这个管道来完成通往地面的电路。

Mr. Carty began installing the metallic circuit in his lines that is, he used wire, instead of the ground, to complete the circuit. As a result of this improvement the telephone was immediately cleared of these annoying interruptions.

Carty 先生开始在他的线路中安装金属电路，即他使用电线而不是地面来完成电路。作为这项改进的结果，电话立即清除了这些烦人的中断。