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

You think you know when you can learn, are more sure when you can write, even more when you can teach, but certain when you can program.

"The greatest enemy of love is not hate, but indifference."

我不追逐潮流，我創造潮流。

朗蘭茲綱領是理解數學統一性的框架。

"Leadership is not about being in charge, but about taking care of those in your charge."

道德規范在我們這個行業是不可協商的。