A simple switch to organic potatoes has the potential to have a big impact because commercially-farmed potatoes are some of the most pesticide-contaminated vegetables.

所以，只要简简单单的将马铃薯改成有机马铃薯，就能产生很大的潜在效果——因为用于商业出售的马铃薯是农药残留量最高的几样蔬菜之一。

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Optimism has been further tempered by one European labouratory which says it can't be sure that, as thought, contaminated vegetables were definitely the source of the E.coli outbreak.

更加让人不乐观的是，欧洲一家实验室表示，他们并不能确定污染了的蔬菜是这次大肠杆菌爆发的源头。

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Officials late Sunday revealed that two more vegetables, canola and chrysanthemum greens, have also been found to be contaminated and in three more prefectures.

官员星期六晚上披露，另外两种蔬菜，油菜籽和蓬蒿菜，也被发现受到污染。 另外三个县也发现食品污染情况。

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About 2.2 million people get sick annually from eating contaminated leafy vegetables.

WSJ: Vegetables Are the Main Cause of Food-Borne Illness, CDC Study Finds

Earlier in January, the FDA unveiled new rule proposals covering all aspects of growing and harvesting produce to try to prevent fruit and vegetables from becoming contaminated with deadly bacteria.

WSJ: Vegetables Are the Main Cause of Food-Borne Illness, CDC Study Finds

Vegetables that grow on the ground are more likely to be contaminated with bacteria, since runoff from animal waste is likely the source of contamination.

FORBES: Seven Simple Steps To Safe Salads