One of the three basic foodstuffs (proteins and fats are the others), carbohydrates are a group of chemical substances including sugars, glycogen, starches, dextrins, and cellulose.

• 下面三个基本食品(蛋白质和脂肪的其他)碳水化合物是一组化学物质,包括糖、糖、淀粉、糊精、纤维素。