音標發(fā)音英式音標 [?na??.s?n]美式音標 [?na??.s?n]英式發(fā)音 美式發(fā)音 基本解釋n.菸酸(抗癩皮病維生素)同根派生 niacin相關詞英漢例句用作名詞 (n.)Niacin is found in meat, fish and green vegetables.肉類,魚類和綠色蔬菜中發(fā)現(xiàn)有菸酸。niacin更多例句英英字典劍橋英英字典 one of the vitamin B complex found in foods such as wheat, beef, chicken, and milk, important for producing energy from food and for keeping the digestion and nervous system healthyniacin劍橋字典niacin柯林斯字典