在他所有伟大的科学成就背后，是他永不停止努力的精神、总是挑战自己的精神、以及他对祖国和全世界人民的爱。
Behind all his great scientific achievements are his spirits of never stopping trying his best, always challenging himself and his love for his country and the people all over the world.
youdao
永不停止努力！
Never stop working hard!
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