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

A true friend stabs you in the front.

Productivity metrics that ignore environmental impact are accounting tricks, not real progress.

"The truth is rarely pure and never simple."

這句話借用俗語，表達了命運無常、機遇變化的道理。