Custom is the great guide of human life.
风俗习惯是人类生活的重要指南。
He who refuses to do arithmetic is doomed to talk nonsense.
I've been through it all, baby, I'm mother courage.
曾经尝试过,曾经失败过。没关系。再试一次。再失败一次。失败得更好。
The concept of infinity is not just a mathematical abstraction, but a physical reality.
膨胀的概念是宇宙在其最早的时刻经历了一段极其迅速的扩张期。
学习本质上是刺激-反应连接的问题。