English-Chinese/The ability to digest milk is limited to children, because adults do not produce lactase, which is essential for lactose digestion in milk

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The ability to digest milk is limited to children, because adults do not produce lactase, which is essential for lactose digestion in milk.

消化牛奶的能力仅限于儿童,因为成年人不会产生乳糖酶,乳糖酶对牛奶中的乳糖消化至关重要。