求翻译：他毕业于清华大学，后到美国读物理，取得大的成就，美国大学聘请他工作，但他拒绝，坚决回国。他的演讲很动人，我决心努力学习。是什么意思？

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He graduates from Qinghua University, latter reads physics to US, obtains the great achievement, American University invites him to work, but he rejects, firm returning to homeland.His lecture is very moving, I was determined studies diligently.

He graduated from Tsinghua University, after the United States reading materials, achieved great success, United States hired him to work at the University, but he refuses, determined to return home. His speech was very moving, and I am determined to study hard.

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