1、Lactose intolerance is the inability to digest lactose, the sugar found in milk.
乳糖不耐癥是指乳糖吸收功能障礙，這些乳糖存在于牛奶中。

2、Lactose intolerance occurs in children as well, but not as frequently.
乳糖不耐癥發(fā)生在兒童一樣，但不作為頻繁。

3、Lactose intolerance is not a milk allergy. It doesn't mean milk is not good for them.
乳糖不耐癥并不是對于牛奶的過敏癥，也不代表牛奶對他們不好。