Concavity
n. 中央凹陷, 凹洼, 凹曲線\\n[醫] 凹, 凹面
? 同義詞
?? 牛津釋義
concavity
n
(a) [U] quality of being concave 凹狀; 凹形.
(b) [C] concave surface 凹面.
?? 醫學釋義
凹面，凹度
??? 情景例句
Not now, I'm not in the mood for an argument.
別這樣，我可不想吵架。
Can I have a second-class one way ticket to Chicago,please?
請給我一張去芝加哥的單程二等票好嗎？
I don't think it will lead to a good result.
我認為這事不會有什么好結果。