国家是理性的行为体，它们寻求最大化相对权力，以确保在竞争性的国际体系中生存。

All things are numbers.

我明白痛苦可以成为最大的灵感。

Sustainability isn't just a buzzword; it's a fundamental part of how we operate.

The beauty of literature lies in its ability to transcend time and space.

科学不仅是理性的学科，也是浪漫和激情的学科。