Its purpose is not to shield radioactive emissions but to prevent the release of radioactive dust and other materials, and to keep out rainwater, which could carry contaminants into the water table.
它的作用不是用来遮挡放射性排放而是阻止放射性烟尘和其它物质的释放，以及遮挡雨水以防止雨水携带污染物流入地下水。
Workers there have figured out how radioactive materials are leaking out into the Pacific Ocean.
日本福岛核电站的工人们知道放射性物质是泄漏到太平洋的原因了。
Workers there have figured out how radioactive materials are leaking out into the Pacific Ocean.
日本福岛核电站的工人们知道放射性物质是泄漏到太平洋的原因了。
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