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 big money is not in the buying and selling … but in the waiting.

形容創業的艱辛

Habit is habit, and not to be flung out of the window by any man, but coaxed downstairs a step at a time.

Technology should serve both progress and preservation.

The sustainable development of the coal industry requires the coordinated efforts of policy, technology, and the market.

The new source of power is not money in the hands of a few, but information in the hands of many.