改個詞。直接補充葡萄糖，應為“僅僅補充葡萄糖”。應該是葡萄糖和果糖等等同時補充。GU膠的成分：

INGREDIENTS:

Maltodextrin, Water, Fructose, Leucine, Sea Salt, Citric Acid, Natural Flavor, Potassium Citrate, Sodium Citrate, Calcium Carbonate, Valine, Green Tea (Leaf) Extract (Contains Caffeine), Gellan Gum, Isoleucine, Sunflower Oil, Sodium Benzoate (Preservative), Potassium Sorbate (Preservative).