There have been fears that cancer could be triggered by the brain's exposure to electromagnetic radiation emitted from mobile handsets held to the ear.
曾经人们很担忧,由于手机听筒接近耳朵,使大脑长期暴露在电磁辐射之下,有可能会引发癌症。
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The earthquake and tsunami it triggered crippled the plant's cooling systems, raising concerns over radiation leaks.