Methylxanthines
(methylxanthine 的第三人称 -s形式) [医] 甲基黄嘌呤, 杂黄嘌呤
🗣️ 情景例句
Are you married or single?
你结婚了还是单身？
My cousin is a member of a stamp club, He seems stamp collecting.
我的表兄是一个集邮俱乐部成员，他似乎很喜欢集邮。
Don't give me your excuses.
别找借口。