However, it's highly unlikely the tsunami-generated debris would be contaminated with radioactive material, according to the National Oceanic and Atmospheric Administration's Marine debris program.

然而，根据国家海洋和大气管理局的海洋废弃物方案，海啸产生的碎片受放射性物质污染是非常不可能的。

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Professor Links says scientists can use computers to quickly model where radioactive material has blown and settled. Then they measure how large an area is contaminated.

林克斯教授表示，科学家可以使用电脑快速模拟什么地方会受放射性物质影响，然后计算出受污染区域的大小。

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Answer: The findings suggest that some foods produced in Japan are likely to be contaminated by radioactive material at levels unsuitable for human consumption.

答：调查结果表明，日本生产的某些食品有可能因受到放射性物质的污染而不适于人类消费。

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In July 2009, Brazilian authorities accused the UK of dumping unwanted contaminated material on its shores, after 89 containers holding 1, 500 tonnes of waste were found on a quay side.

BBC: UK firm fined over illegal waste exported to Brazil

He added the exceptions were in place to stop recyclable material becoming contaminated by non-recyclables.

BBC: Public Services changes plastic recycling in Guernsey

But his clear implication was that the material they had to work with was already contaminated when they got it.

CNN: Simpson attorneys push contaminated evidence theory