level of noise

例句：

1. 1. The factory is located at the lowest level of the city.
   工厂位于城市最低层。
2. 2.The noise level in the area has been reduced significantly.
   该地区的噪音水平已经显著降低。
3. 3. The engineer measured the noise level to ensure it was within acceptable limits.
   工程师测量了噪音水平，以确保它处于可接受的范围内。