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  1. Yes , according to Donald Belsito , a professor of dermatology at ColumbiaUniversity Medical Center , those clean-looking clothes aren 't so clean after all .

    哥伦比亚大学医学中心皮肤科教授唐纳德•贝尔西托的答案是,要洗,因为那些看起来干净的衣服实际上并不干净。