Euler's thorem
[计] 欧拉定理
🗣️ 情景例句
Your buildings are very large, aren't they?
你们的厂房很大，对吗？
You cannot judge a tree by its bark.
人不可貌相。
at eighty can knock us out, and into our grave.
能到了80岁可能会使我们一蹶不振而进入坟墓。