水生植物

It is an organ of perennation or vegetative propagation, and is characteristic of various water plants (e.g.Sagittaria).

这是多年营养繁殖器官，还是多种水的特征之一(例如：Sagittaria)。

Quillworts are heterosporous, mainly aquatic perennials, with a dense rosette of tubular quill-like leaves arising from a short, stout rootstock.

水韭目的具有子，是多年水。其管状条形叶密集簇于粗短的根茎之上。

The result indicates that great differences,which have significant influence on the aqua-plants,exist in the evapotranspire,the bio-mass,the root density and the root length.

研究的结果表，不同水的蒸散量、量、根密度和根长存在较大的差，这些差对水的泌氧性能、碎石床人工湿地的水力负荷率、氮磷去除效果和有机污染的降解有重要的影响。

In any navigation channel, the following activities are prohibited: abandoning sunken vessels, laying fishing implements impedimental to navigation, and cultivating aquatic plants.

在航道内不得弃置沉船，不得设置碍航渔具，不得种水。