Pneumatization
n. [医](骨或其他组织中的)气腔形成
🗣️ 情景例句
There aren't too many examples of this style of architecture left these days.
现在这种风格的建筑已所剩无几了。
I put some photographs in the envelope.
我在信里夹了几张照片。
Why? What's happening?
为什么？发生了什么事？