环保人士警告说，我们居住的是个布有各种危险化学物质的世界，从强效杀虫剂到戴奥辛、聚氯联苯等有毒工业废物都有。
We live, environmentalists warn, in a world laced with dangerous chemicals, from powerful pesticides to toxic industrial wastes like dioxin and PCBs.
环保人士今天警告说，成百上千的入侵物种-从鼠类到各种疾病-正成为全球野生生物遭遇的最大威胁之一。
Hundreds of invasive species - from rats to diseases - are posing one of the greatest threats to wildlife around the world, conservationists warned today.
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