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caffein

/ˈkæf.iːn/

翻译: 一种存在于咖啡和茶中的苦味生物碱,具有兴奋中枢神经的作用。

1 个条目

noun

/ˈkæf.iːn/B1formalscientific
  • zh一种存在于咖啡和茶中的苦味生物碱,具有兴奋中枢神经的作用。

A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects.

不可数

  1. Stimulant compoundB2formal

    A bitter, crystalline alkaloid found naturally in coffee, tea, and other plants, known for its stimulating effects on the central nervous system.

    zh兴奋性化合物

    • Many people drink coffee for its caffeine content to stay alert.
    • Caffeine can improve focus and reduce fatigue.
    • Excessive consumption of caffeine may lead to insomnia.

    同义词caffeine