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 past is a map, showing us where we have been.

The world is a book, and those who do not travel read only a page.

"Education never ends, Watson. It is a series of lessons, with the greatest for the last."

研究歷史就是學習時間的語法。

The act of writing requires a constant plunging back into the shadow of the past where time hovers ghostlike.

客戶的聲音是任何企業中最重要聲音。