caffeine /'kæfi:n/ ★☆☆☆☆ 📖 中文释义 n. 咖啡因, 咖啡碱[化] 咖啡因; 咖啡碱 🔗 释义中的汉语词 咖啡因咖啡碱 📘 English Definition(英文释义) n. a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects ← caffeinated C 字母词表 caffeine addict →