柯林斯词典acetic acid /əˈsiːtɪk ˈæsɪd/ 1. N-UNCOUNT Acetic acid is a colourless acid. It is the main substance in vinegar. 醋酸 返回 acetic acid剑桥词典a clear acid with a strong smell , found in vinegar 乙酸，醋酸 返回 acetic acid