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.
真相很少是纯粹的，也从来不是简单的。
Diversity in forest species mirrors the diversity needed in business thinking.
阿拉伯文学的美在于它能够将历史与想象编织在一起。