事实上，我们都在等待有人来拯救我们。

如果对这种行为能够容忍，那么还有什么行为不能容忍呢？

Illustrations should not just decorate the text; they should expand it.

将可持续发展与商业战略相结合是取得进展的唯一途径。

The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is a finite problem.

The only thing that overcomes hard luck is hard work.