Diban
[化] 二碱式硝酸铝
🗣️ 情景例句
My wife and I are celebrating our fifth anniversary.
我太太和我要庆祝一下我们的结婚五周年。
It is my pleasure to introduce the keynote speaker for today.
我很荣幸地介绍今天的主讲人。
the other the lack of freedom of the individual research worker.
二是研究人员缺乏个人自由。