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

We must remember that history is written by the victors, but memory is preserved by the vanquished.

身處鄙野不能看輕自己，而處廟宇高臺則不能看重自己。

The true power of mathematics lies in its ability to simplify the complex and reveal the underlying patterns of the universe.

學習新編程語言的唯一方法是用它編寫程序。