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

請你允許我告訴你，我是多么熱烈地敬慕你和愛你。

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

You don't have to be a genius or a visionary to succeed. You just need to be persistent.

"To a great mind, nothing is little."

我永遠相信，只要堅持，就一定能成功。