什么是水污染？水污染源主要有哪些？的翻译：What is water pollution? What are the major pollution sources? 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

What is water pollution? What are the main sources of water?

What is water pollution? What are the major pollution sources?

What is a water pollution? Which does the water pollution source mainly have?

What is water pollution? What are the main sources of water pollution?

What is water pollution? What are the major pollution sources?