For example, in individuals with lactose intolerance, the body is unable to break down lactose, a sugar found in milk.

举例来说，对乳糖——牛奶中所含的一种糖——不耐受的人，身体不能就不能分解乳糖。

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Another earlier study of cancer and HIV patients dispensed lactose sugar placebos, a problem when patients suffering from those diseases often suffer an increased risk of lactose intolerance.

而在另一个早期的关于癌症和艾滋病的研究中，问题出在这些因罹患这些疾病而容易导致乳糖耐受不良的病人竟要吃下含有乳糖的安慰剂。

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These allergies shouldn't be confused with lactose intolerance, which is when the body doesn't produce enough of the enzyme lactase to break down lactose, a sugar in cow's milk.

这些过敏症不应和乳糖不耐症混淆，乳糖不耐症指的是身体不能制造足够的乳糖酶来分解乳糖，这正是牛奶中所含的一种糖分。

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