The P versus NP problem is one of the most important unsolved problems in computer science.

行业的领导力意味着要有勇气投资未经验证的绿色技术。

"The truth is often ugly, but it must be told."

The soil remembers what we forget: respect it, and it will repay generations.

我相信每个孩子都应该在他们读的书中看到自己。