Cavosurface
[医] 洞面
🗣️ 情景例句
He was a dull man and you had to explain things very slowly to him.
他脑筋迟钝，你必须慢慢地给他解释事情。
Do you often play bridge on Saturday?
你常常在星期六玩桥牌吗？
Yes, I am.
对，我就是。