Arsenic is widely distributed in nature and also an important environmental pollutant.

砷广泛分布于自然界，而且是一种重要的环境污染物。

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Lead is a ubiquitous environmental pollutant, which causes great damage to the human health.

铅是一种常见的环境污染物，给人类健康带来了巨大的损害。

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Chromium is known as a widely distributed element in the crust and most important environmental pollutant.

铬是一种广泛分布于地壳中的元素，同时也是一种重要的环境污染元素。

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Diversa, a California biotech, has isolated an enzyme from a volcanic crater in Russia that is now being used to help whiten paper, reducing the need for chlorine dioxide, an environmental pollutant.

FORBES: Magazine Article

Under Dr. Bronner's claim, petroleum-based ingredients and compounds such as 1, 4-dioxane, which in large quantities is an environmental pollutant, in the competing products mislead consumers into thinking they are healthier than nonorganic wares.

FORBES: Dr. Bronner's Organic Discord

This reduces both the time involved in finding a parking space and the environmental impact from pollutant emissions. 14 ParkNow stations are currently set up in and around San Francisco.

ENGADGET: BMW DriveNow EV car sharing comes to San Francisco Bay Area, ParkNow follows suit