In his book Autobiographical Notes, Einstein recalls how he once daydreamed about chasing a beam of light as it traveled through space.
在他的著作《自述注记》中，爱因斯坦回忆道他当时幻想在宇宙中追逐一道光线。
In his book Autobiographical Notes, Einstein recalls how he once daydreamed about chasing a beam of light as it traveled through space.
在他的著作《自述注记》中，爱因斯坦回忆道他当时幻想在宇宙中追逐一道光线。
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