Biorthogonality relation
[计] 双正交关系
🧩 词语组成解析
[计] 双正交
🗣️ 情景例句
Come in. Oh, Carl and David.
哦，是卡尔和大卫，请进。
You really don't have anything to apologize for.
你真的没什么可道歉的。
Where did you put the oranges?
你把橘子放在哪了？