Concavo-concave
a. 两凹的, 两面凹洼的\\n[建] 两面凹的
🧩 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
My father likes going fishing and hunting in his spare time.
我父亲喜欢在业余时间钓鱼和打猎。
A little body often harbours a great soul.
莫道身躯小，伟人寓其间。
Aren't you lucky!
你们真幸运！