Acn
abbr. Automatic Celestial Navigation 自动天体导航\\nabbr. 乙腈
🗣️ 情景例句
Is he still in his office?
他还在办公室吗？
It's an honor to be speaking to you today.
今天跟你们说话至感荣幸。
I have just finished the book.
我刚刚读完这本书。