Sometimes you'll win. Sometimes you'll lose. 有时你会成功，有时你将面临失败。 Presuming a reservoir of goodness in other people, that can be a risk, and there will be times when the process will disappoint you. 假定他人总心怀善意是有风险的，有时你会感到失望。 But for those of us fortunate enough to have been a part of this work, and to see it up close, 但是对于那些幸运的、得以参与其中一部分工作并见证这些工作得以完成的人来说， let me tell you, it can energize and inspire. 他们从中吸取了力量，备受鼓舞。 And more often than not, your faith in America, and in Americans, will be confirmed. 更重要的是，他们对美国、对美国人的信念从中得到了肯定。 Mine sure has been. 我自己对美国及美国人的信念的确也加强了。 Over the course of these eight years, I've seen the hopeful faces of young graduates and our newest military officers. 这八年，我看到那么多年轻毕业生和新晋军官洋溢着希望的脸庞。