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。

"A story has no beginning or end: arbitrarily one chooses that moment of experience from which to look back or from which to look ahead."

译文：想要做成一件事情，首要的是做到足够自信，想要战胜他人必定先要战胜自己。赏析：做任何事前，我们的心态很重要，首先要有自信。人要失去自信，做事就缺乏必胜的勇气。一件事最难的不是事情本身，而是我们的内心是否够强大。

Efficiency in operations is the key to staying competitive in this industry.

The computer is a tool, not a substitute for thinking.

诗人的话语是永恒的回响。

Life is short, and it's up to you to make it sweet.

The development of enterprises must resonate with national strategies.

衰败的恶果，都是强盛时不知修持而积累来的。人老后的疾病，都因年轻时不知养生而落下的。