基本解釋[化] 咖啡因; 咖啡堿,[醫(yī)] 瓜拉那瞼(即咖啡因)同根派生 guaranine相關詞英漢例句One of the main ingredients in guarana extract is a form of caffeine called guaranine. 瓜 拉那提取物的其一主要成份是一種叫瓜拉那因子的咖啡因。Unlike caffeine, guaranine is slow to release and doesn’t give the initial quick burst of energy and then the quick let-down. 與咖啡因不同，瓜拉那因子會慢慢釋放能量，而不是一下子強勁爆發(fā)后瞬間即逝。guaranine更多例句