aquatic ecosystem的用法和樣例：
例句
- Further complicating this issue is the need to maintain healthy aquatic ecosystems.
更為復雜的問(wèn)題在于保持健康的水生生態(tài)系統的需要。 - The result showed that the pollution of the waterbody exerted agreat disadvantageous effect to the Haihe River ecosystem.
結果表明，水體污染已經(jīng)對海河水生生態(tài)系統產(chǎn)生了明顯的有害影響。
