noun🔗Share咖啡因 An alkaloid, C8H10N4O2, found naturally in tea and coffee plants which acts as a mild stimulant on the central nervous system."Many students drink coffee for the caffeine to help them stay awake and study. "很多学生为了靠咖啡因提神，保持清醒以便学习，所以喝咖啡。substancedrinkchemistrycompoundphysiologymedicineenergyfoodplantbiochemistryChat with AIVocabulary GamePractice Reading
