Xan
n. 黄嘌呤（等于xanthine）
🗣️ 情景例句
English is important for those who wish to do international trade.
英语对于那些想做国际贸易的人来说太重要了。
Discussing all these details will get us nowhere.
讨论这些枝节问题是完全没有用的。
Eric had been the eldest son of the family, very much older than his two brothers.
埃里克是这家长子。