1、Alcohol dehydrogenase is an enzyme that converts alcohol into its corresponding aldehyde or ketone by removing hydrogen atoms.
酒精脱氢酶是一种酶，通过去除氢原子将酒精转化为相应的醛或酮。

2、Pyruvate dehydrogenase is a complex enzyme that plays a key role in the conversion of pyruvate to acetyl CoA in the citric acid cycle.
丙酮酸脱氢酶是一种复杂的酶，在柠檬酸循环中将丙酮酸转化为乙酰辅酶A起着关键的作用。