caffeine

US /ˈkæf.iːn/
UK /ˈkæf.iːn/
"caffeine" picture
1.

咖啡因

a stimulant drug found in coffee, tea, soft drinks, and chocolate

:
Coffee contains a high amount of caffeine.
咖啡含有大量的咖啡因
Some people are sensitive to caffeine and avoid it.
有些人对咖啡因敏感,会避免摄入。