Concave point
[计] 凹点
🧩 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
I'm here to see Mr. Carlson.
我来见Carlson先生。
Speech is silver (or silvern), silence is golden.
雄辩是银，沈默是金。
I'd like to do some shopping, but not during the day.
我愿意买些东西，但不必白天去。