/əˌskɔ:bɪk ˈæsɪd ||; əˈskɔrbɪk ˈæsɪd/(also ˌvitamin ˈC) noun [U] a natural substance that is found in fruit such as lemons and oranges and in green vegetables. Humans and animals need ascorbic acid in order to stay healthy. 抗坏血酸（存在于柠檬、橙、绿色蔬菜等）