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 heart of another is a dark forest, always, no matter how close it has been to one's own.

What can be said at all can be said clearly; and whereof one cannot speak thereof one must be silent.

The only way to achieve something great is to love what you do.

作家是所有獨裁的敵人，無論是左翼還是右翼。

我們有責任利用科學改善生活，而不僅僅是追求利潤。

Every tree we plant today is an investment in a greener, healthier tomorrow.

PAC學習框架提供了一種正式的方法來分析學習算法的效率和有效性。