The study of intelligence must be grounded in the study of symbol systems.
When I write songs, I often cry.
你受到的约束越多,你就变得越有创造力。
The only way to grow is to challenge yourself.
You have to be passionate about what you do, or you'll never succeed.
函数是一种对应规则,通过它当给定任何东西(作为参数)时,可以获得另一个东西(该参数的函数值)。