Biorthogonality relation
[计] 双正交关系
🧩 词语组成解析
[计] 双正交
🗣️ 情景例句
Good-bye.
再见。
How late are you open.
你们营业到几点？
I was having dinner at a restaurant when Tony Steele came in.
我正在一家饭馆吃饭，托尼。斯蒂尔走了进来。