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6月4日,美国能源部部长朱棣文(1997年诺贝尔物理学奖得主)应邀在哈佛大学毕业典礼上发表演讲,同日,他也获得了哈佛大学荣誉博士学位。在此选登部分演讲内容,以飨读者。
On June 4, U.S. Secretary of Energy Steven Chu (Nobel Prize winner in physics in 1997) was invited to give a speech at the graduation ceremony of Harvard University. On the same day, he also received an honorary doctorate from Harvard University. Selected part of the contents of the speech in order to readers.