果胶任一种用于凝结各种食物、药品和化装品的高分子量且溶于水的胶质碳水化合物，存在于如苹果、杏和葡萄等成熟的水果中 Any of a group of water-soluble colloidal carbohydrates of high molecular weight found in ripe fruits, such as apples, plums, and grapefruit, and used to jell various foods, drugs, and cosmetics.
不成熟的未熟或成熟的；不成熟的 Not ripe or matured; immature.
成熟的苹果开始从树上落下来了。 Ripe apples are beginning to fall off the trees.
