只要你能坚持一步一步往前走,你几乎可以度过任何难关。
You can survive almost anything if you can just keep putting one foot in front of the other.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
行人似乎永远没有意识到他们对于汽车的安全而言是一种威胁。