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

學習數學的唯一方法就是做數學。

I'm grateful for every challenge because it made me stronger.

形容世事短暫如春夢，人情淡薄如秋云。

The future of work must be inclusive, or it will fail to harness the full potential of human capital.

The computer is incredibly fast, accurate, and stupid. Man is unbelievably slow, inaccurate, and brilliant. The marriage of the two is a force beyond calculation.

我是一個女人，我有不完美之處……我為此感到自豪。