Diazoimide
叠氮酸
🗣️ 情景例句
Thank you.
谢谢。
If this shirt doesn't fit,may I bring it back later?
如果这件衬衫不适合，我以后可以带回来换吗？
I was proud that we had come across something that was completely unknown and valuable and,
让我感到自豪的是，我们在无意中发现了不为世人所知的、有价值的东西，