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

Wherever we are, what we hear is mostly noise. When we ignore it, it disturbs us. When we listen to it, we find it fascinating.

"The hardest part of design is keeping features out."

Forests are not just carbon sinks—they are life sources.

"The novel is the most democratic of art forms."

改良植物育種的秘訣，除了科學(xué)知識(shí)外，就是愛。

我們患有一種叫做希望的絕癥。