de·tec·tor
noun/dɪˈtektə(r)/
/dɪˈtektər/
- a piece of equipment for discovering the presence of something, such as metal, smoke, explosives or changes in pressure or temperature
探测器；侦察器；检测器 - a smoke detector
烟雾检测器
Oxford Collocations DictionaryDetector is used before these nouns:- van
- lie
- metal
- motion
- …
- a smoke detector