Xanthines
(xanthine 的第三人称 -s形式) n. 黄质, 黄嘌呤\\n[化] 黄嘌呤
🗣️ 情景例句
You really miss your family, don't you?
你非常惦念你的家人是吗？
Do you usually learn French after school?
你通常在放学后学法文吗？
The cave might never have been discovered has not the entrance been spotted by the distinguished French pot-holer, Berger.
若不是法国著名洞穴探险家伯杰由于偶然的机会发现了这个洞口的话，这个洞也许不会为人所知。