人为来源可以包括机动车辆、工业燃料燃烧和制造业务。

Manmade sources can include motor vehicles, and industrial fuel burning, and manufacturing operations.

youdao

人为来源可以包括机动车辆、工业燃料燃烧和制造业务。

Manmade sources can include motor vehicles, and industrial fuel burning, and manufacturing operations.

youdao