Concavation
凹度
🗣️ 情景例句
I grew up in Riverdale, remember?
你记得吗？我就是在 Riverdale长大的。
A joke never gains an enemy but often loses a friend.
开玩笑总不能化敌为友，反而有时会失去朋友。
We're going to meet here, outside the school gate, at two o'clock.
我们打算两点钟在校门外见面。