Pneumatization
n. [医](骨或其他组织中的)气腔形成
🗣️ 情景例句
Spring has sprung and all the flowers are blooming.
春天来了。花儿都开了。
A bad bush is better than the open field.
有胜于无。
Funny, said my brother.
“真有趣，”我弟弟说。