法律的概念本质上是一个社会事实问题。

Quality is the lifeline of a project, we must never relax our pursuit of quality.

He is richest who is content with the least，for content is the wealth of nature.

写作不仅仅是讲故事，更是揭示隐藏的真相。

Overfishing is a theft from future generations—we must be the generation that stops it.

林业创新意味着在传统与技术之间取得平衡——尊重过去，同时建设未来。