any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose
同义词：Lactaid
lactase详细解释
lac.tase n.（名词）An enzyme occurring in certain yeasts and in the intestinal juices of mammals that is capable of splitting lactose into glucose and galactose.乳糖酶：一种能将乳糖分解成葡萄糖和半乳糖的酶，它存在于某些酵母或哺乳动物的体液中
