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本帖最后由 卓越地毯清洗 于 2015-10-24 22:16 编辑
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阿尔伯特的Radon比安省还厉害。这是CBC上报道的。别道听途说了。还是少在地下室呆着吧。
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7 o8 R4 Q2 I3 G9 e, D9 k( m, `Radon is produced naturally when uranium in soil breaks down. However, it's also the second leading cause of lung cancer in Canada and nearly half of Prairie homes have amounts exceeding Health Canada's safety guidelines.
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出处:
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