Quadtatic
[计] 二次平均的
🗣️ 情景例句
Well, children usually resemble their parents.
嗯， 孩子总是像父母的。
Catch the bear before you sell his skin.
大事未成时，莫开庆功宴。
Oh dear! What's wrong?
噢，亲爱的！怎么啦？