Related topics: Technology
ˈsmoke aˌlarm (also smoke detector) noun [countableC] TFIREa piece of electronic equipment which warns you when there is smoke or fire in a building 烟雾警报器 The smoke alarm went off. 烟雾警报器响了起来。
→4 See picture of 见图 ALARM 1 →5 see picture at 见图 alarm1