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

If we want to feed the world, we must invest in smarter ways to raise livestock.

In mathematics, the art of proposing a question must be held of higher value than solving it.

The pursuit of science is more than the pursuit of understanding. It is the pursuit of wonder.

繪畫是用雙手祈禱。

種一棵樹最好的時間是20年前，第二好的時間就是現(xiàn)在。

The best way to predict the future is to create it.

愛是唯一超越時空障礙的語言。