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。
All water has a perfect memory and is forever trying to get back to where it was.
理性是冰冷的太阳,它给予光明却不给予温暖。
The pain of loss is the price we pay for the joy of love.
The only way to do great work is to love what you do.