数学家的模式,就像画家或诗人的模式一样,必须是美丽的;思想,就像颜色或文字一样,必须以和谐的方式结合在一起。
It is always good to have a problem that you cannot solve. It means you have something to work on.
我们销售的每一个汉堡都代表着向更可持续的食品系统迈进一步。