Quadtatic
[计] 二次平均的
🗣️ 情景例句
I'll see you then.
到时候见啦。
My brother is not quite twenty-five.
我的兄弟不够25岁。
Sorry. It's at home. But you can buy one in the shop.
对不起，我的格尺在家里。你去商店里买一个吧。