Quadtatic
[计] 二次平均的
🗣️ 情景例句
Your real education doesn't start until you get out into the real world.
直到你踏入现实社会，你才真正开始学习。
Have you send him any pencils?
你送他铅笔吗？
She's a new student. She's American.
她是个新来的同学，是个美国人。