英语语法分析

Lake Nanhu is in serious eutrophic state, and needs to take measures to prevent the water quality from worsening further.

长春市南湖水体呈现较为严重的富营养化状态，需要采取措施防止南湖水质进一步恶化。

Using enclosure ecosystem bags, the control of algal overgrowth with chemical methods is studied in eutrophic Chaohu Lake.

本文报道了在湖泊现场用围隔生态系统对藻类进行化学控制的研究。

And eutrophic state of five major lakes in our country were studied with more satisfactory result compared with other methods.

并研究了我国五个主要湖泊的富营养化状况，和其它方法比较，取得了满意的结果。