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

A tree's strength lies in its roots, just as a company's strength lies in its values.

"To read is to travel without moving, to live a thousand lives in one."

詩人是關注世界的人。

I don't chase success. I define it.

在計算機科學領域，數學嚴謹性是構建可靠高效算法的基石。