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

通常情况下，胆盐会结钙离子，以此阻止钙离子与非结胆红素结淀。

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

后一部端回肠，可以吸收维生素B12和胆汁盐（进行胆盐循环）。

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.

胆盐和胆汁酸是胆固醇代谢的主要产物，所以胆汁酸的子式如图，而胆盐是阴离子形式，类似于这个（Roo-）基团。