Extrados
n. [建]拱背(拱的外缘线)
✅ 同义词
🗣️ 情景例句
My wife is a writer. She writes on her computer. She has published ten novels already.
我的太太是个作家。她在计算机上写作。她已发表了10部长篇小说。
I'd met Stone several times before.
以前我见过世通几次。
Why don't you come a little earlier? About a quarter to.OK?
45分左右来，好吗？