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We spend more than a third of our lives in bed - but that place can quickly blossom into a "botanical park" of bacteria and fungus, according to New York University microbiologist Philip Tierno. 纽约大学的微生物学家菲利普•缇艾诺指出，我们有超过三分之一的人生都是在床上度过的，而我们的床可以迅速发展成细菌和真菌的“植物园”。 If left for too long, the microscopic life within the wrinkles and folds of our bed sheets can even make us sick, Tierno told Business Insider. 缇艾诺告诉商业内幕网说，如果床单太久不洗，床单皱褶里的微生物就会让我们生病。 To stem the invisible tide, he said sheets should be washed once a week. 为了防范于未然，他表示床单应该每周洗一次。 | 
