To be happy, I must have my books and a piece of sky.
要快乐,我必须拥有我的书和一片天空。
世界上最好和最美丽的东西是看不见甚至摸不到的——它们必须用心去感受。
The concept of NP-completeness has provided a powerful tool for understanding the complexity of problems.
The path to success is paved with calculated risks and relentless effort.
I'm not a speech, I'm a melody.