Contravariant vector
[计] 逆变向量
🧩 词语组成解析
反［抗, 逆］变式, 抗［逆］变量
🗣️ 情景例句
May I ask who's calling?
请问你是谁？
Tell me where I can post them.
请问，哪里有投信的邮筒？
It's a pleasure working with you.
与您合作很愉快。