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 principal object of management should be to secure the maximum prosperity for the employer, coupled with the maximum prosperity for each employee.

生命中最偉大的事情是保持心靈年輕。