The final portion is called the terminal ileum, and it absorbs vitamin B12 and bile salts which are recycled.

最后一部分为末端回肠，可吸收维生B12汁盐（进行盐循环）。

Usually though, bile salts bind up the calcium ions and keep them from binding with and precipitating unconjugated bilirubin.

通常情况下，盐会结合钙离子，此阻止钙离子非结合红结合并沉淀。

Bile salts and acids are mostly a product of cholesterol metabolism, so an acid might look something like this and its salt is the anionic form, something like this (ROO-) group.

盐汁酸是固醇代谢的主要产物，所汁酸的分子式如图，而盐是阴离子形式，类似于这个（Roo-）基团。

There is some evidence it's not necessarily good for the gut microbiome because the bile salt in products from emulsifying saturated fat, because it requires more bile, that those might be toxic to some beneficial species of bacteria.

有证据表明，它对肠道微生物群不一定有益，因为乳化饱脂肪产品中的汁盐需要更多的汁，而这些汁盐可能对某些有益细菌有毒性。