Urylene
1,3-亚脲基
🗣️ 情景例句
I'd like to meet your daughter someday.
我希望有一天能见到你女儿。
How much do you know about the works of Henry Wadsworth Longfellow?
你对亨利·朗费罗的工作知道多少？
Would you let me know your fax number?
可以告诉我您的传真机号码吗？