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

科學最令人興奮的方面是發(fā)現(xiàn)一些新的東西，一些以前沒有人見過的東西。

我還不夠年輕，無法知道一切。

The stars are not afraid to appear like fireflies.

The difference between theory and practice is that in theory, there is no difference between theory and practice, but in practice, there is.

"A poem is a small machine made out of words."

Design is not just what it looks like and feels like.Design is how it works.

Mathematics is the art of giving the same name to different things.

我熱愛我所做的事情，并且充滿激情地去做。