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

應對死亡的唯一方法是將之前的一切轉化為藝術。

When people are faced with a problem, they often think in terms of past experiences rather than looking at the actual structure of the problem.

數學之美在于它能夠化繁為簡。

預測未來的最好方法就是創造未來。