A child with depression may pretend to be sick, refuse to go to school, cling to a parent, or worry that a parent may die.

抑郁患儿可能装病、拒绝上学、粘着父母或担心父母一方可能会死。

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For years, people have wondered whether they are safe from germs when they travel in small, enclosed areas. They worry about close contact with others who may be sick.

多年以来，人们一直想知道在小又人口密集的区域旅行时，他们是否能够不受细菌的侵害。他们担心与可能患病的人接触。

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For years, people have wondered whether they are safe from germs when they travel in small, enclosed areas. They worry about close contact with others who may be sick.

多年以来，人们一直想知道在小又人口密集的区域旅行时，他们是否能够不受细菌的侵害。他们担心与可能患病的人接触。

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