在爱因斯坦的时代，全世界只有几千名物理学家，那些在智力上能与爱因斯坦匹敌的理论家，可能一辆有轨电车就都坐下了。

In Einstein's day, there were only a few thousand physicists worldwide, and the theoreticians who could intellectually rival Einstein probably would fit into a streetcar with seats to spare.

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我长大后想成为一名物理学家。

I want to be a physics scientist when I grow up.

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为什么会这么多？因为一些老资格的物理学教授有经费充足的实验室，每人手下都会有五到十名博士生。

Why? Senior physics professors have well-financed LABS with five to 10 Ph.D.-student researchers.

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Ernest Rutherford. Ernest Rutherford: he was a professor of physics as well, but he was at Victoria University in Manchester just up the road from Cambridge.

恩内斯特，卢瑟福：,他也是一名物理学教授，但是在曼彻斯特的维多利亚大学,离剑桥不远。

麻省理工公开课 - 固态化学导论课程节选