It serves, they say, as a reservoir of beneficial microbes which can recolonize the gut after it's emptied by diseases such as cholera or dysentery.
他说它像一个有益菌的蓄水池那样工作着,当被像霍乱和痢疾之类的疾病耗尽之后能够重迁移到肠道中去。
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