At whatever grade
level teachers find themselves, from kindergarten to the final class at medical
or law school, few moments stir the emotions as deeply as when former students
reappear years and often decades later with an update on where their journey has
taken them and what resiliencies
have been the pavement on which they’ve traveled.
请问老师们，这里的what是用作限定词限定resiliencies吗？如果是，该what分句作为on的介词补足成分，是一个宾语从句，是否能改写为resiliencies that have been the pavement？
