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
Sure, but never before have we had payment in RMB.
当然可以，不过我们从来没有用过人民币付款。
If I had known that, I could have helped you.
假如我早知道，我就能帮你了。
I want a dress like that one, but it must be my size.
我想一件和那件一样的，但必须是我的尺寸。