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

The ruling ideas of each age have ever been the ideas of its ruling class.

"The only thing we know about the future is that it will be different."

當你最不抱期望時，研究的堅持往往會帶來回報。

The future belongs to those who can balance short-term performance with long-term vision.

一本書就是你手中握著的夢想。