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。
数学的本质在于它的自由。
The city is about intensity, concentration, and diversity.
来吧,我的朋友,寻找更新的世界尚为时不晚,我决心已定,要驶过夕阳尽头,尽管我们不再有昔日的伟力,可以震天撼地,我们仍有着,同样的英雄的心,时间和命运使它衰老,但坚强意志仍在,让我们去奋斗,去探索,去发现,永不屈服。
The most powerful stories are those that resonate with our own experiences.
Nature has provided us with incredible tools to study biology; we just need to know where to look.