有些人不能消化乳糖。

Some people cannot digest lactose.

乳糖酶有助于乳糖的消化。

Lactase helps in the digestion of lactose.

你可以买到不含乳糖的牛奶。

You can buy milk that is free of lactose.

乳糖是牛奶中常见的双糖。

Lactose is a common disaccharide found in milk.

常见的双糖有蔗糖和乳糖。

Common disaccharides include sucrose and lactose.

乳糖存在于牛奶和其他乳制品中。

Lactose is found in milk and other dairy products.

酶乳糖酶帮助分解体内的乳糖。

The enzyme lactase helps break down lactose in the body.

乳糖操纵子是最著名的例子之一。

The lactose operon is one of the most famous examples.

牛奶中含有乳糖。

Milk contains lactose.

乳糖是一种天然糖。

Lactose is a natural sugar.