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

Efficiency in farming should never come at the cost of biodiversity.

The greatest enemy of a trader is hope. Hope is what keeps you in a losing trade.

Aprender a leer es lo más importante que me ha pasado en la vida.

Life is about making an impact, not making an income.

抽象是管理大型軟件系統復雜性的關鍵。

Science cannot solve the ultimate mystery of nature. And that is because, in the last analysis, we ourselves are part of nature and therefore part of the mystery that we are trying to solve.