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  1. caffeine

    • IPA[kaˈfēn]

    美式

    • n.
      a crystalline compound that is found especially in tea and coffee plants and is a stimulant of the central nervous system.
    • noun: caffeine

    • 更多解釋
    • IPA[ˈkafiːn]

    英式

    • n.
      an alkaloid compound which is found especially in tea and coffee plants and is a stimulant of ...

    Oxford Dictionary