Os ischii
坐骨
🧩 词语组成解析
n. 骨, 孔, 穴裂口\\n[计] 办公系统, 操作系统
🗣️ 情景例句
We're in luck.
我们运气好。
Money often unmakes the men who make it.
为富不仁。
Yes. What day is it tomorrow?
有。明天是什么日子？