The concept of law involves the union of primary rules of obligation with secondary rules of recognition, change, and adjudication.

技术创新可以提高效率并减少采矿作业对环境的影响。

学习任何事情的最好方法就是去做。

Without patience, you cannot learn anything.

尽一切职责，而不希望得到任何回报。

I love the process of making movies. I love the collaboration, the creativity, the problem-solving.