The first part is the two aspects of the validityoflaw.
第一部分，法律有效性的两个向度。
2
Validityoflaw is a very important legal issue, but also a controversial issue.
法的效力是一个十分重要的法学问题，同时也是一个争议颇多的问题。
3
Yale President Richard Levin may have recognized the validityof some of these objections when he mentioned the 'limitations that Yale has to accept given Singaporean tradition and law.