Forty-five years ago, we made a solemn（庄严的，严肃的） compact as a nation that senior citizens would not go without the health care they need. This is the promise we made when Medicare was born. And it&rsqu
I'm even prouder to share a fundamental truth that you might not have learned, even as graduate of Harvard, unless you studied the ancient Greek role with professor Nagy. 同时 我要更自豪地分享一件事尽管你们是哈佛毕业生
