英语语法分析

Its stomach contents mainly consist of hydrophyte, miscellaneous fishes, shrimps, mollusc, aquatic insects and worms.

胃内物组成有植物、小杂鱼、虾类、贝类、水生昆虫和蠕虫。

The result indicated that its helpful to improve water quality and entironment that plant hydrophyte with stated density in culturing crab pond.

结果表明：在养蟹池塘中种植一定密度的水生植物有利于水体生态环境的改善。

The functions of the hydrophyte filter bed(HFB) for improving source water quality were surveyed in terms of microcystin and trace organic pollutants.

从对藻毒素和微量有机污染物的去除方面考察了水生植物滤床（HFB）在改善源水水质方面的效果。