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。

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Therefore, the primary pollution control objective must be point source pollution and diffuse source of domestic wastewater in rural areas.

因此水污染控制必须以点源污染和农村生活面源污染为双重控制目标。

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First, because sunlight is a diffuse energy source, they need to spread out over a large area as cheaply as possible.

首先，因为阳光是弥漫性能量来源，光电面板需要尽可能成本低廉的大面积铺开。

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