酯一类有机化合物，相当于无机盐，是由一分子有机酸和一分子酒精构成的 Any of a class of organic compounds corresponding to the inorganic salts and formed from an organic acid and an alcohol.
多烯一种包含许多双键的有机化合物 An organic compound containing many double bonds.
在学院里我主修有机化学。 In college I specialize in organic chemistry.
