Biorthogonality relation
[计] 双正交关系
🧩 词语组成解析
[计] 双正交
🗣️ 情景例句
Mind your manners.
注意你的行为举止。
The husband mows his lawn on Saturdays.
那位丈夫在每个周六修剪草坪。
But wouldn't you like to spend an extra day or two here?
你们不愿意在北京多待一天吗？