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1·Reduction of aldoses or ketoses yield sugar alcohols ,properly called ‘alditols,” HOCH2-(CHOH)n-CH2OH.

醛糖或酮糖被还原后变产生糖醇，确实的叫法为“多羟糖醇”（alditols），HOCH 2 -（CHOH）n-CH 2 OH。

2·The simple sugars monosaccharides0 are basically aliphatic polyhydroxy aldehydes and ketones: HOCH2 - CHOH n-CHO and HOCH2 - CHOOH n-1-C-O-Ch2OH, called aldoses and ketoses, respectively.

单糖本质上是脂族的多羟基醛和酮，即HOCH2 - (CHOH) 2 - CHO和HOCH 2 - (CHOH) n - 1 - C： O - CH 2 OH，分别称为醛糖和酮糖。