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。

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Economic growth may be maintained, but as the environmentalists warn, we may need another two Earths to meet the new US-style consumption of the Chinese nation.

经济增长也许可以保持，但正如环境学家所警告的那样，为了满足中国这种新的美国式消费，我们可能需要两个地球。

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While the increase in tiger Numbers is good news, say environmentalists, they warn India cannot get complacent.

在老虎数量增长这一好消息面前，环保人士仍然警告印度不可自满。

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But environmentalists warn that some big firms are playing carbon rules to their own advantage.

BBC: Energy Bill and plans to pay firms to cut energy use due

Environmentalists warn that the proposed highway's traffic could turn some of the park's majestic wildlife into roadkill.

BBC: Eco-scorecard to the world��s great attractions

And some additional, much less happy news from Australia, as Unesco and environmentalists warn that climate change and large-scale coal mining may lead to the wholesale destruction of the Great Barrier Reef.

BBC: In brief: Unearthing Australia's secret history