解释:道理和事情既没有永远正确的,也没有永远是错误的。
You have to fight through some bad days to earn the best days of your life.
The best picture books are those that respect the child’s intelligence and imagination.
The harder you work, the luckier you get.
粒子的概念只是近似的,并且只有在动量较小的极限下才有意义。
I don’t compete with others, I compete with myself.