参考译文：收集来的光能将水和二氧化碳转化，产生氧气和一种单糖——葡萄糖。
The trapped light energy changes water and carbon dioxide to produce oxygen and a simple sugar called glucose.
蜂蜜是一种单糖，因而更易被人体吸收，这是国家标准中不允许蜂蜜产品添加糖类和代糖类物质的原因所在。
Honey is a kind of monosaccharide, which is easy for human to absorb. This is the main reason that sugars and artificial sweeteners are forbidden in honey in our country.
半乳糖一种单糖，CH2OH (CHOH) 4cho，一般产生于乳糖及特定的果酸、树胶及胶质物中。
A monosaccharide, CH2OH (CHOH) 4cho, commonly occurring in lactose and in certain pectins, gums, and mucilages.
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