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

There is no such thing as society: there are individual men and women, and there are families.

Agriculture is the most honorable of professions, for it sustains life itself.

我們必須在經濟增長和環境責任之間取得平衡——它們并不是相互排斥的。

The study of Galois representations is a testament to the power of algebraic methods.

用心不能雜亂，雜亂則心神恍惚不能集中；用心不要勞累，勞累則精神疲倦不能有所收獲。

為什么我會和這樣同時代的人一塊出生呢？