Bile contains cholesterol, bile acids and bile pigments. It has a detergent-like effect on fats.

胆汁含有胆固醇，胆汁酸和胆色素。对脂肪有类似洗涤剂的作用。

These acids and their salts have both hydrophobic and hydrophilic sides, making them amphiphilic, which help them make cholesterol and fat in the gut more soluble in bile.

胆汁酸和胆盐同时具有疏和，，得益于此，胆汁可以更好地溶解肠道中的胆固醇和脂肪。

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，所以胆汁酸的分子式如图，而胆盐是阴离子形式，类似于这个（Roo-）基团。

That bile emulsifies the fat, essentially making fat organize into small " micelles" , which are tiny bubbles of mixed lipids and bile acids, rather than clumping together, and making them easier to absorb.

胆汁可将脂肪乳化，把脂肪分解为脂肪微滴；这些微滴是脂类和胆汁酸混合而成的小液滴；这样脂肪就不会聚集成团，吸收也就变得更容易了。