常見例句用作名詞 (n.)A similar, less severe and metabolic disorder is congenital lactase deficiency.類似的,病癥略輕為一點(diǎn)的代謝紊亂疾病是乳糖分解酶素缺乏癥。Sweden has one of the world's highest percentages of lactase tolerant people.其中瑞典為乳糖耐受性比例最高的國家。Lactose intolerance stems from a deficiency of the enzyme lactase, which is needed to help digest lactose, a sugar in milk.乳糖不耐癥的病因是缺乏乳糖酶,這些乳糖酶是消化乳糖的必需物質(zhì),牛奶中的糖就屬于此類。 返回 lactase