Xan
n. 黄嘌呤（等于xanthine）
🗣️ 情景例句
What time does the library close?
图书馆什么时候闭馆？
We assume that damage occurred while the consignment was in your care.
我们认为货物是在你方保管时受到损害的。
Show your tickets，please.
请出示你的票。