The anarchic nature of the international system compels states to prioritize their own survival above all else.

我们今天所做的每一个决定都会在未来的海洋生态系统中产生回响。

最有力的故事是我们亲身经历的那些。

The power of accurate observation is commonly called cynicism by those who have not got it.

The universe is vast and full of mysteries, and exoplanets are just one of the many wonders waiting to be uncovered.

认证标准不仅仅是文书工作，它们是我们对地球的承诺。