在语言中，词语和它们所指的事物之间没有一对一的对应关系。

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

未来出行不仅仅关乎汽车本身，而是围绕它的整个生态系统。