river environment的用法和樣例：
例句
- Groundwater is an important and indiscerptible part of the whole water environment.
地下水是水環境不可分割且十分重要的一部分。 - The State shall institute a system for eliminating outdated production techniques and equipment which seriously pollute the water environment.
國家對嚴重污染水環境的落後生產工藝和嚴重污染水環境的落後設備實行淘汰制度。
