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
in the public school
在公立学校中
As the wind blows, you must set your sail.
趁风启帆。
and are capable of a considerable degree of personal affection.
而且会对主人产生相当深厚的私人感情。