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。The gauge relies upon a sensor in the tank to relay the fuel level.油表靠油箱里的感应器来显示燃料的液位。Electronic sensors have located a huge subterranean cavern in the Sierre Madre mountain range.电子感应器在马德雷山脉中发现了一个很大的地下洞穴。