Basis ossis sacri
[医] 骶骨底
🧩 词语组成解析
basis
['besɪs]
n. 基础;主要成分;基准，基本原则;
骨髓腔
🗣️ 情景例句
Have you anything dutiable?
您有应缴税的东西吗？
To know everything is to know nothing.
事事皆知，事事不懂。
What about your sister Kate? You didn't come together, did you?
你的妹妹凯特呢？你们不是一起进校的，对不对？