Calcificaton
[建] 钙化(作用), 骨化(作用)
🗣️ 情景例句
Donald passed away a couple of years ago.
Donald几年前去世了。
Know something of everything and everything of something.
既要有一般常识，又要有专业知识。
You must always return your library book on time!
你必须按时归还图书馆的书！