气候的变化不是一朝一夕的原因,它的由来是逐渐的。
数学和计算机科学之间的联系不是单向的;每个领域都丰富了另一个领域。
You get what you give. What you put into things is what you get out of them.
History is not just what happened, but what we remember and how we remember it.