Floodwater may contain human and animal wastes, and other pollutants like agricultural and industrial chemicals.

洪水包含了人类的和动物的垃圾和其他像农业和工业的化学污染。

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Such algae blooms which can choke other forms of aquatic life have grown increasingly apparent in lakes and coastal waters recent years as a result of excessive use of agricultural chemicals.

近些年农用化学品的过度使用导致湖泊和沿海水域表面绿藻迅猛滋生，这将导致水生生物缺氧窒息。

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Such algae blooms, which can choke other forms of aquatic life, have grown increasingly apparent in lakes and coastal waters recent years as a result of excessive use of agricultural chemicals.

近些年农用化学品的过度使用导致湖泊和沿海水域表面绿藻迅猛滋生，这将导致水生生物窒息。

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Top American exports in 2010 included computers and electronics, agricultural products, chemicals, transportation equipment, and other machinery, particularly airplanes, the USCBC said.

FORBES: For US Trade Deficit, Don't Blame Yuan

Dams, agricultural chemicals, overfishing and other ills have led to a catastrophic drop in numbers, particularly in North America (where the first European settlers probably ate eel, not turkey, at the first Thanksgiving).

ECONOMIST: Slithery creatures, strangely determined