Kā fēi yīn refers to caffeine, an alkaloid found in coffee beans and other plants.
咖啡因 (kā fēi yīn) 指一种存在于咖啡豆中的生物碱。
| Chinese | 咖啡因 |
|---|---|
| English | caffeine |
| Pinyin | ka1 fei1 yin1 |
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