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

在數(shù)學中，提出問題的藝術必須比解決問題更有價值。

有時最普通的事情反而最難解釋。

The human being is always more than what he has done; he is also what he can do.

"The Middle East is not just a geography, it's an open wound in the body of history that keeps bleeding stories."

I woke up like this.

互聯(lián)網(wǎng)的本質(zhì)是連接，連接人與信息，連接人與服務，連接人與人。