Arcus costarum
[医] 肋弓
🧩 词语组成解析
[医] 弓
[解]肋
🗣️ 情景例句
I'm sure you can, Ellen.
说的没错， Ellen。
What do you do?
你是做什么的？
The real dividing line between continents and oceans occurs at the foot of a steeper slope.
大陆和海洋的真正分界线是在陡坡脚大陆架慢坡