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

People with a clear sense of identity know who they are and what they stand for. They have a strong sense of self and are not easily swayed by others.

幸福來自之間。它不是你可以直接找到、獲得或?qū)崿F(xiàn)的東西。你必須創(chuàng)造合適的條件，然后等待。

朗蘭茲綱領不是一組靜態(tài)的猜想，而是一個動態(tài)的研究領域。

Computer programming is an art, because it applies accumulated knowledge to the world, because it requires skill and ingenuity, and especially because it produces objects of beauty.

音樂是靈魂的心跳。

The past is always there, and it's always different every time you look at it.

在數(shù)學中，解決問題的旅程與解決方案本身同樣重要。