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
You're so good in all your other subjects.
你别的功课都那样好。
Well, hello, stranger! Have you moved something?
你好，久违了！你是迁居了还是怎么样啦？
Some of them are very cheap.
其中有些商品挺便宜的。