Os palatinum
[医]腭骨：不规则骨，形成硬腭的后部、鼻前庭的侧壁，位于翼突内侧板和上颌骨之间，构成眶底的后部
🧩 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
Thank you. Yes, actually Mary and I have been planning this for some time.
谢谢。其实玛丽和我已计划了很久。
What would you do if I told you I was going to quit my job?
如果我告诉你我准备辞职，你会怎么办？
In this shop you can buy school things.
你可以在这个商店里买到学习用品。