Cavum protovertebrae
[医] 原椎腔
🧩 词语组成解析
n. 空腔(如耳腔)
🗣️ 情景例句
Not just to go around the neighborhood asking for furniture,
不仅在这社区募家具，
He helps my father every day.
他每天都帮助我的父亲做事。
Have your mechanics finished yet?
你们的机械师修好了吗？