Agricultural non-point pollution is formed by 4 processes of rainfall runoff, soil erosion, surface solution stripping and soil solution seepage.

农业非点源污染主要由降雨径流、土壤侵蚀、地表溶质溶出和土壤溶质渗漏4个过程形成。

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They're stuck to a surface that's provided by the environment that's around them, they're not swimming free in solution.

他们黏联在,周围环境的表面上,而不会在溶液中自由运动

耶鲁公开课 - 生物医学工程探索课程节选

Even if that beaker had all the nutrients that skin cells needed they wouldn't survive very well in solution, they tend to need to be stuck to a surface in order to survive.

即使供给它们所有所需的养分,它们也不能在溶液中正常存活,皮肤细胞倾向于贴壁生长

耶鲁公开课 - 生物医学工程探索课程节选

This so-called pregnant solution is then pumped to the surface.

FORBES: Energy & Genius

In creating his "fungus accretion" vases, Simon brushed the rough surface of a ceramic vase with a clay-and-water solution until it built upon itself like a hand-dripped sand castle.

WSJ: The Wonder Twins of the Design World: Nikolai and Simon Haas | Designers