你能给别人的最大礼物就是你的时间。
The greatest gift you can give someone is your time.
To speak is to risk, but to be silent is to risk more.
P与NP问题是计算机科学中最重要的未解决问题之一。
There's a tendency to think that our present politicians are much worse than we had in the past.But we tend to forget how awful our politicians were in the past.
The moment eternal—just that and nothing more.
The destiny of a nation is determined by its people.