Each of you is a witness to that potential, in what you have learned and achieved here, and in your own hopes for the futureTwenty years：你们每个人都是一个潜在的证人，你所学习的，在这里实现，并在自己的futuretwenty年的希望

Each of you is a witness to that potential, in what you have learned and achieved here, and in your own hopes for the futureTwenty years：你们每个人都是一个潜在的证人，你所学习的，在这里实现，并在自己的futuretwenty年的希望of,is,a,Each,you,that,what,have,and,each