劍橋詞典a sugar that is formed of two single sugar molecules 二糖（由兩個(gè)單糖分子組成的糖類） Sucrose is a disaccharide made of one fructose and one glucose molecule . 蔗糖屬于二糖，由一個(gè)果糖分子和一個(gè)葡萄糖分子組成。 返回 disaccharide