Poincare transformation
[化] 庞加莱变换
🧩 词语组成解析
庞加莱（法国数学家）
🗣️ 情景例句
Especially when it comes to speaking in English and fortunately or unfortunately.
特别是要用英文来演讲，不知是幸运还是不幸。
Have you had breakfast already?
你已经吃了早餐吗？
As long as all was still, the pen drew a straight line,
只要一切都是静止的，笔就会划出一条直线；