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 beauty of quantum mechanics lies in its ability to reveal the hidden connections between seemingly unrelated phenomena."

The artist must be a witness to the sacred.

NP完全性的概念為理解問題的復(fù)雜性提供了一個(gè)強(qiáng)大的工具。

我從最底層爬上來，現(xiàn)在我在這兒。

利潤(rùn)永遠(yuǎn)不應(yīng)以犧牲海洋生物多樣性為代價(jià)。

Climate change is the ultimate test of our agricultural ingenuity.

You can't just sit there and wait for people to give you that golden dream. You've got to get out there and make it happen for yourself.

We don't inherit the land from our ancestors; we borrow it from our children.

我們?cè)搅私庾约旱钠姡驮侥芾盟鼈優(yōu)樽约悍?wù)。