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
Well, how's everything here?
唔，东西都收拾好了吗？
Be careful.
小心。
No problem! Tell me, do I have to take them before or after meals?
“那不难！告诉我，我是在饭前还是饭后吃呢？”