三碳糖 [－－－]

Jyutping saam1 taan3 tong4
Pinyin sān tàn táng

Definitions (CC-CEDICT)

triose (CH2O)3, monosaccharide with three carbon atoms, such as glyceraldehyde 甘油醛[gan1 you2 quan2]

Definitions (Wiktionary)