Cavum protovertebrae
[医] 原椎腔
🧩 词语组成解析
n. 空腔(如耳腔)
🗣️ 情景例句
I've been friendly with the Stewart family
我和Stewart家有交情
To walk on a beautiful day
在晴朗的日子出去散步
He's going to school.
上学。