言辞不仅可以用来描述现实，还可以用来创造新的现实。

You have to be willing to sacrifice to get what you want or what you need.

"Fear is the most democratic of all emotions."

Modern quarrying must marry the wisdom of geology with the innovation of engineering.

这只狗叫桑迪。我喜欢桑迪。它不聪明，但非常快乐。

The interplay between discrete and continuous mathematics is where some of the most interesting problems lie.