柯林斯词典lactic acid /ˈlæktɪk ˈæsɪd/ 1. N-UNCOUNT Lactic acid is a type of acid which is found in sour milk and is also produced by your muscles when you have been exercising a lot. 乳酸 返回 lactic acid剑桥词典an acid that exists in sour milk and is produced in muscles after a lot of exercise 乳酸 返回 lactic acid