sonic detector

例句：

1. 1.This sonic detector can detect the sound of a mouse in the room.
   这个声波探测器可以探测房间里的老鼠声音。
2. 2.The sonic detector was used to locate the lost child.
   声波探测器被用来定位失踪的孩子。
3. 3. The sonic detector was used to detect the presence of an intruder.
   声波探测器被用来探测入侵者的存在。