caffeine基本解释
n,[药][有化]咖啡因；茶精（兴奋剂）,同近
Avoid caffeine (= drinks with caffeine ) before bedtime..睡觉前不要喝含有咖啡因的饮料。
[有化][药] 咖啡因；茶精（兴奋剂）英释中释na substance in tea, coffee, and some other drinks that makes you feel more active
