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

死亡本身并不可怕；但我們害怕成為未知，去向未知。

The chief beauty about time is that you cannot waste it in advance. The next year, the next day, the next hour are lying ready for you, as perfect, as unspoiled, as if you had never wasted or misapplied a single moment in all your life. You can turn over a new leaf every hour if you choose.

我在數(shù)學(xué)上花的時間越多，我就越興奮。

最大的悲劇不是死亡，而是遺忘母語。

The most important thing in a database is the data model. If you get the data model right, everything else will follow.

真正的財富是不需要的財富。