Methylxanthines
(methylxanthine 的第三人称 -s形式) [医] 甲基黄嘌呤, 杂黄嘌呤
🗣️ 情景例句
Where's your father?
你爸爸在哪？
Nothing comes from (or of) nothing.
无风不起浪。
Well, you're going to have roast beef and potatoes again tonight!
唉，今晚你们又要吃烤牛肉和土豆了！