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成人大便的“正常”频度在每周3次与每天3次之间。进食“西方”饮食者每天粪便量为100～200g,其中60～85％是水份。粪便中水份超过100ml 即可引起腹泻。
The “normal” frequency of adult stools is between 3 times a week and 3 times a day. Feeding the “Western” diet daily manure is 100 ~ 200g, of which 60 to 85% is water. Diarrhea can be caused when the water in the stool exceeds 100ml.