解释:既要追悔以往的过失,也要预防将来可能发生的错误。
教育不仅仅是达到目的的手段,其本身就是目的。
每本书都是作者首先要独自经历的旅程。
I've always been a person who follows my heart.
The concept of NP-completeness has provided a powerful tool for understanding the complexity of computational problems.