Mechanisms of phytoremediation are proposed to be uptake of organic chemicals by plant and effect of plant root secretion and microorganisms on the degradation of organic contamination.

植物修复的机理包括植物对有机污染物的直接吸收、植物根系分泌物、 微生物对根际环境中有机污染物降解的促进作用。

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The paper mainly introduces current status of organic contamination in groundwater, and combines the tenet, mainstream and proposition of environmental ethics to discuss the origin of the problem.

对太湖流域某地区浅层地下水有机污染特征进行了总结，并就污染来源、污染途径和典型污染源附近浅层地下水有机污染特征等问题进行了研究。

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What is clear is that both organic and conventional foods are susceptible to contamination by pathogenic microorganisms at every point in the food chain.

不过有一点是很清楚的，无论是有机食品还是常规食品在它们生产链条的每一个环节都有可能被致病微生物污染。

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In 2003, the UK Food Safety Agency tested six organic corn meal products and 20 conventional (non-organic) corn meal products for fumonisin contamination.

FORBES: Bittman of the 'New York Times': Always Out To Lunch

However, when in December the USDA indicated that a complete ban on GMO alfalfa was no longer a possible outcome, Organic Valley and the others went to work advocating for a set of strict rules that would serve to protect organic farmers and organic consumers from the threat of GMO contamination.

FORBES: The OrganicGate Scandal

Organic farmer Gerald Miles told the Today programme that he believes there is a risk of contamination to other wheat crops.

BBC: GM researcher: 'Please don't destroy our crop'