A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.
The architect must be a teacher.
"Cada novela es un viaje a lo desconocido, incluso para quien la escribe."
模糊集的概念为构建一个在许多方面与普通集框架平行的概念框架提供了一个方便的出发点。
每张皮革都承载着两个历史:动物的生命和制革者的遗产。我们对两者都负有责任。