名词
中文翻译：苦根碱
同义词：
['caffeine', 'caffeine alkaloid']
例句：
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1.Chaconine is a natural compound found in coffee beans.
苦根碱是咖啡豆中发现的一种天然化合物。
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2. The caffeine content of this tea is significantly higher than that of regular black tea.
这种茶的咖啡因含量显著高于普通黑茶。
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3. Caffeine is known to have stimulating effects on the central nervous system.
咖啡因已知对中枢神经系统有刺激作用。