noise source

例句：

1. 1.The noise from the construction site is a major source of pollution.
   工地的噪音是主要的污染来源。
2. 2. The noise source was identified as coming from the factory.
   噪声源被确定来自工厂。
3. 3. The noise can be reduced by using soundproof materials in the construction site.
   通过在施工现场使用隔音材料，可以降低噪声。