The five million villi in the small intestine provide a total area for food absorption of more than five times the surface area of the body.
小肠内五百万肠绒毛形成的食物吸收区，其面积比人体表面大五倍。
The five million villi in the small intestine provide a total area for food absorption of more than five times the surface area of the body.
小肠内五百万肠绒毛形成的食物吸收区，其面积比人体表面大五倍。
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