Except lactose intolerance , which I definitely understand .

但是乳糖绝对不能容忍，这个我十分理解

A so-called milk allergy or lactose intolerance is really an intolerance or allergy to pasteurization .

一种称为牛奶过敏症或乳糖不耐受症其实是对高温消毒后的牛奶的不耐受症或过敏症。

Whether counting calories or minding your lactose intake , you can never know too much about what you 're eating .

不管你怎么计算着卡路里或者留心乳糖的摄入量，你永远对你所吃的东西知之甚少。

Some people have trouble digesting lactose , a carbohydrate in milk and milk products , because of the deficiency of enzyme lactase in the body .

有些人无法消化乳糖，一种在牛奶和奶制品中的碳水化合物，这是因为在他们的身体中缺少乳糖消化酶。

The milk sugar lactose is broken down by the enzyme lactase .

奶中的乳糖由乳糖酶分解。