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这是因为在冬天的时候,人们更多的呆在室内,呼吸着同样的空气,互相传染细菌。
That is because, during the winter, people stay inside more and breathe the same air, sharing their germs.
youdao
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这是因为在冬天的时候,人们更多的呆在室内,呼吸着同样的空气,互相传染细菌。
That is because, during the winter, people stay inside more and breathe the same air, sharing their germs.
youdao