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BNC: 22623 COCA: 9489

caffeine

1 ENTRIES FOUND:
caffeine /kæˈfiːn/ Brit /ˈkæˌfiːn/ noun
caffeine
/kæˈfiːn/ Brit /ˈkæˌfiːn/
noun
Learner's definition of CAFFEINE
[noncount]
: a substance that is found especially in coffee and tea and that makes you feel more awake咖啡因;咖啡碱

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