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

在數學中，旅程和目的地同樣重要。

Sustainability is not an option; it's a necessity for long-term success.

沒有了目的，生活便郁悶無光。

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'

The universe is not only stranger than we imagine, it is stranger than we can imagine.

The most effective way to promote democracy is not through military intervention but through the slow and steady process of building institutions and promoting economic development.

美好生活的本質是生活得沒有任何匆忙感。