(一)
graduation is a time for rejoining and is also a time for reflection.you will be going out into the world to make a career for yourself.wish you well in all your understandings and hope that you will find your career a source of great joy and happiness.
毕业是欢庆的时刻，也是思考的时刻。你将进入社会，为新的事业而奋斗。愿你万事顺利，并希望你的事业成为你欢乐和幸福的源泉。
congratulations, graduate.may all your dreams and plans turn to fulfillment and success.
祝贺你，毕业生。愿你梦想成真，万事如意。
heartiest congratulations upon your graduation.wishing you all the excitement, all the challenge, all the happiness life call hold.
衷心祝贺你毕业，愿你的生活充满激情、挑战和幸福。
i'm hopeful and confident that the graduation ceremony will really be a completely new start.i believe that the knowledge you have acquired will enable you to be successful in whatever field you may enter.
我希望，同时也相信，毕业典礼是你全新的开端。我深信，以你所掌握的知识，不管从事何种工作你都能大有作为。
(二)
graduation is a time for rejoining and is also a time for reflection.you will be going out into the world to make a career for yourself.wish you well in all your understandings and hope that you will find your career a source of great joy and happiness.
毕业是欢庆的时刻，也是思考的时刻。你将进入社会，为新的事业而奋斗。愿你万事顺利，并希望你的事业成为你欢乐和幸福的源泉。
congratulations upon having received your doctorate in philosophy.i know this has meant years of study and hard work on your part, and it is an achievement you can well be proud of.i am sure, from the fine record, that you will be equally successful in whatever career you pursue.
祝贺你获得博士学位，我知道这是你多年来勤奋学习、努力工作的结果，你应当为自己取得的成就而自豪。从你取得的优异成绩来看，我深信你无论从事何种职业，都将获得同样的成功。
it was delightful news for me to learn that you have received a doctor’s degree from chicago university.to have reached this milestone at a young age is simple great.i really envy you the opportunities that lie ahead.hearty congratulations.
非常高兴获悉你取得芝加哥大学的博士学位，你这么年轻就在学业上成绩如此卓着，实在令人钦佩。我衷心祝贺你!