当你打开油漆或颜料时，哪怕只用一丁点，无论你多么小心，它总会沾到你的衣服，不妨准备好新的着装。
When you open paint， even a tiny bit， it will always find its way to your clothes no matter how careful you are. Dress accordingly.
我们不仅要关注技术的进步，还要关注用户的需求。
我们所见所感，只不过是梦中的梦。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.