So by manipulating the control wire, one could open or close the circuit.

因此通过操作控制线路我们就可以打开或闭合电路。

In a relay, there is a control wire that determines whether a circuit is opened or closed.

在继电器中，有根决定电路是否闭合的控制线。

He seemed to be on wires, controlled by some electric machine, for he almost bolted out of the door when the barman asked with what he could serve him, and his hand shivered as he took the glass.

他似乎在电线上，由某种电机控制，因为当酒保问他能为他提供什么服务时，他几乎狂奔出门，他的手在接过玻璃杯时颤抖着。