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 never just the past. It is always a foundation for the present.

The quality of an organization's training determines the quality of its people.

譯文：認(rèn)識(shí)是實(shí)踐的開(kāi)始，實(shí)踐是認(rèn)識(shí)的完成。圣人之學(xué)只有一個(gè)功夫，知和行不能分成兩件事。