法律的概念涉及主要规则和次要规则的结合。
The concept of law involves the union of primary and secondary rules.
The mind once enlightened cannot again become dark.
The poet is the one who listens to the world.
The more you live, the more you learn. The more you learn, the more you realize how little you know.
Collaboration across industries is key to solving the complex challenges of marine conservation.