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
Are there any sports clubs on campus?
校园中有什么体育活动俱乐部吗？
I don't believe he will get to the station on time.
我不相信他会准时到车站。
Without something of this kind, searching for intelligences on other planets
没有这种手段，要想寻觅其他星球上的智力生命，