Convexo-concave
a. 一面凸一面凹的\\n[建] 凸凹的
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
🗣️ 情景例句
Yes. But could you wait one minute?
是的。不过， 你能等一下吗？
I want to extend my warmest welcome to all of you.
热烈欢迎大家。
Supper is ready at six.
晚餐六点钟就好了。