The challenge for modern states is to maintain their legitimacy while also being effective in providing services and maintaining order.

We wish to discuss a structure for salt of deoxyribose nucleic acid. This structure has novel features which are of considerable biological interest.

变化的速度永远不会比今天更慢。

生存就是在苦难中找到意义。

最重要的是保持承诺。

True leadership in agriculture means seeing beyond the current harvest.

劳动分工在尽可能程度上引入，在每一门艺术中都会导致劳动生产力的相应增加。