smoke detector

例句：

1. 1. The smoke detector in the kitchen is very sensitive.
   厨房里的烟雾探测器非常敏感。
2. 2.When there's a fire, the smoke detector will immediately sound an alarm.
   发生火灾时，烟雾探测器会立即发出警报。
3. 3. We installed a new smoke detector in our home to improve safety.
   我们在家里安装了一个新的烟雾探测器，以提高安全性。