Concavity
n. 中央凹陷, 凹洼, 凹曲线\\n[医] 凹, 凹面
✅ 同义词
📖 牛津释义
concavity
n
(a) [U] quality of being concave 凹状; 凹形.
(b) [C] concave surface 凹面.
🏥 医学释义
凹面，凹度
🗣️ 情景例句
I've got a terrible headache and I feel really sick today.
我头疼得厉害，今天觉得很恶心。
My brother is two years younger than I am.
我的兄弟比我年轻2年。
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，