Bivector
二重矢量, 二重向量, 平面量
🗣️ 情景例句
Thanks a lot.
多谢，多谢！
Is this your pen? I found it under the desk.
这是你的笔吗？我在桌下捡的。
When they were very young, Mr. Green sometimes dressed up in a red coat. But he doesn't do that now.
在他们很小时，有时候格林先生穿上一件红色的外套。但他现在不那么做了。