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
Isn't that right?
对不对？
He has a cup.
他有一只杯子。
Good! Thanks.
太感谢了。