色多多在线观看播放-色多多在线观看高清免费-色多多在线观看视频-色多多在线看-欧美aaaaa性bbbbb小妇-欧美aaaav免费大片

"The beauty of computational complexity lies in its ability to reveal the inherent difficulty of problems, regardless of the specific algorithms used to solve them."

"To write is to confront the ghosts that the past has left behind."

The old believe everything, the middle-aged suspect everything, the young know everything.

在中國，互聯網的發展速度比美國快得多，因為我們沒有歷史包袱。

我常說，你永遠不可能太努力工作。