Orthonormalization
规化正交集
🗣️ 情景例句
In what subject did you get the highest marks?
你哪门科目得分最高？
What did he answer you?
他回答了你什么？
I've been working so hard recently that I haven't had any time for collecting new stamps.
最近我的学习一直很紧张，没有时间收集新邮票。