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

What I remember above all about Harvard was being in the midst of so much energy and intelligence. It could be exhilarating, intimidating, sometimes even discouraging, but always challenging. It was an amazing privilege…and though I left early, I was transformed by my years at Harvard, the friendships I made, and the ideas I worked on.

The personal is political, and the political is personal.

計算理論不僅僅是關于解決問題，還涉及理解可計算性的極限。

我們必須在能源安全需求和減排的迫切性之間取得平衡。

成功不在于成為最大，而在于產生最大的影響。