The switches close the contacts and complete the circuit.

这些开关可接通形成闭合电路。

I was confronted with an array of knobs, levers, and switches.

我面对着一排旋钮、控制杆和开关。

The front window switches are awkwardly placed on the dashboard.

前窗的开关安装在仪表板上，使用不便。

There are also instructions about the function of all the buttons and switches.

这里还有关于所有按钮和开关功能的说明。

While Stella napped, Sally would clean her home in Jackson, New Jersey, wiping down doorknobs and light switches.

史黛拉打盹的时候，莎莉会打扫她在新泽西杰克森的家，擦拭门把手和电灯开关。