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法律的概念涉及义务的初级规则与承认、变更和裁决的次级规则的结合。
The concept of law involves the union of primary rules of obligation with secondary rules of recognition, change, and adjudication.
可持续林业不是成本,而是对我们未来的投资。
领导力在于做出艰难的决定并坚持到底。
"Always be learning. The world is constantly changing, and you need to keep up."
鹰从未像他屈服于向乌鸦学习时那样失去如此多的时间。