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caffeine

B2 noun

Các nghĩa

  1. cafêin · cà phê tinh · caffein

    An alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system.

    uncountable · usually

    For example, 0.100 grams of caffeine yield by combustion, by weight, 0.180 grammes of carbonic acid.

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