永远不要停止学习,一旦停止,你就会开始落后。
The P versus NP problem is one of the most important unsolved problems in computer science.
"The problem with being faster than light is that you can only live in darkness."
地球唱着Mi, Fa, Mi:你甚至可以从音节中推断出,在我们这个家园中,苦难和饥荒占据着统治地位。