英语语法分析

Rainfall runoff is the main factor affecting the formation of nonpoint pollution.

降雨径流是形成非点源污染的主要影响因素。

Nonpoint source — Diffuse source such as runoff from agricultural or developed land.

非点源——像农业或是被开发土壤中流失的分散资源。

Endogenous effect mechanism of rural nonpoint pollution control are lack both in domestic and abroad.

国内外农村面源污染控制都缺乏内源的长效运行机制。