一些是小和比较简单的分子，譬如糖和氨基酸，当其他人是大和复杂的，例如淀粉和纤维素。
Some are small and comparatively simple molecules, such as sugars and amino acids, while others are large and complex, for example starch and cellulose.
碳水化合物最初是按照它们的天然来源来命名的，例如甜菜糖、甘蔗糖、葡萄糖、麦芽糖、乳糖、玉米淀粉、肝糖原、甜玉米糖原。
Carbohydrates were first named according to their natural sources; e.g., beet sugar, cane sugar, grape sugar, malt sugar, milk sugar, cornstarch, liver glycogen, and sweet corn glycogen.
例如，很多人认为面包是碳水化合物(淀粉)食品。
Many people think of bread, for example, as a carbohydrate food.
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