caffeine

🇬🇧/ˈkæfiːn/ 🇺🇸/kæˈfiːn/📚 9728 104 1
Caffeine is a chemical substance found in coffee, tea, and cocoa, which affects your brain and body and makes you more active. 咖啡因

noun [物质名词][有化][药] 咖啡因;茶精(兴奋剂)

Tea contains caffeine. It's bad for your health.
茶含有咖啡因,对你的健康不利。

caffeine 出现在下面的课文中
Lesson 041&42 Penny’s bag caffeine 名词: 咖啡因
单词造句: