Pythagorean
a. 毕达哥拉斯的
🗣️ 情景例句
No ... thank you.
不……谢谢你。
An empty bag cannot stand upright.
空袋不能直立。
He was very healthy and happy, but he could not look after himself.
他很健康，非常欢快。但不能照料自己。