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来源：雅诚德英语网
Einstein had written an article in his later years (1946) with the subject of E=MC2.
爱因斯坦在晚年（1946年）写了一篇文章，题目是《E=MC2》。
Einstein had written an article in his later years (1946) with the subject of E=MC2.
爱因斯坦在晚年（1946年）写了一篇文章，题目是《E=MC2》。