A sensor is an instrument which reacts to certain physical conditions or impressions such as heat or light, and which is used to provide information. 传感器
noun [专属名词](探测光、热、压力等的)传感器,敏感元件,探测设备
The latest Japanese vacuum cleaners contain sensors that detect the amount of dust and type of floor. 日本最新款吸尘器装有传感器,能测出灰尘量和地板类型。