The thing about happiness is that you only know you had it when it's gone.
The future of food production lies in balancing efficiency with environmental stewardship.
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。
Life is like a bracelet...It has little jewels around it which are like the little bright moments that come along in our lives every now and then...