书是一个小小的奇迹。
官僚的效用函数中包括其预算规模作为一个参数。
This is how the entire course of a life can be changed: by doing nothing.
DNA的结构是一个需要解决的谜题。
My past doesn't define me, it's just part of my story.
化学是连接微观世界和我们日常所见现实的桥梁。