NP完全性不仅仅是一个理论上的好奇心;它对实际计算有着深远的影响。
【释义】若不是在正午半夜的时候,连太阳和月亮都看不见。描绘了三峡峡谷幽深、遮天蔽日的景象。
"Always be learning. The world is constantly changing, and you need to keep up."
The beauty of cinema is that it can transport you to another world.