WaPo live updates
中午，她们上到四楼西餐厅。平时近 200 元的套餐，当天对所有女性半价。
。新收录的资料对此有专业解读
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Sievert (Sv): A measure of the effective dose—that is, the health effects of the radiation, with different types of ionizing radiation (gamma rays, X-rays, alpha particles, and so on) having different effects. One sievert equals 1 joule per kilogram weighted for the biological effectiveness of the radiation and the tissues exposed.