When insects bite genetically modified Bt corn and cotton, they get a mouthful of a built-in toxin, produced by every cell of the plant.

当昆虫叮咬基因改造后的Bt菌玉米，他们叮咬的其实是满口的内置毒素，植物的每一个细胞都会产生这样的毒素。

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Tests showed increased levels of toxin in shellfish.

测试表明贝类中的毒素级别上升了。

《柯林斯英汉双解大词典》

In polluted environments, dolphins gradually accumulated toxins in their body fat, and the larger the dolphin, the more accumulated toxin it can tolerate.

在被污染的环境中，海豚体内的脂肪会逐渐积聚毒素。海豚的体型越大，它所能承受的毒素就越多。

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Scientists now believe the birds had consumed domoic acid, a toxin found in algae that had gotten into their diet.

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In an oxygen-free (anaerobic) environment at a certain temperature, pH and salinity, the bacteria can produce a toxin that in very small amounts can cause life-threatening paralysis.

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As the heart of America's petrochemical and oil-refining industries, Texas puts more chemicals into the air than any other state, and by most rankings is the state with the worst toxin level in the atmosphere.

ECONOMIST: The Lone Smog State | The