switches例句
I was confronted with an array of knobs, levers, and
switches.
我面对的是一大堆旋钮、控制杆和开关。
This button
switches the current on.
这个电钮接通电流.
If you buy a drier, look for one with a sensor which
switches off when clothes are dry.
你若要买烘干机，找一台带感应器的，可以在衣服干的时候自动断电。