Concavity
n. 中央凹陷, 凹洼, 凹曲线\\n[医] 凹, 凹面
📖 牛津释义
concavity
n
(a) [U] quality of being concave 凹状; 凹形.
(b) [C] concave surface 凹面.
🗣️ 情景例句
Harry, what would you like? Harry
你要什么?
Thank you for sending it to me.
谢谢你把它送给我。
On day Haley met and African who was from Gambia, a small country on the west coast of Africa.
有一天,哈利碰到一位非洲人,他来自冈比亚--非洲西海岸的一个小国。
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