Roentgen discovered X - rays; Darwin found many new species on the Galapagos Islands.

伦琴发现了x射线； 这里发现了很多古物。

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X-rays were first discovered by a German scientist,Wilhelm Conrad roentgen,in 1895,almost by accident.

X射线最初是在1895年被一个德国科学家偶然地发现的，他的名字叫Wilhelm Conrad roentgen.

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William Roentgen discovered X - rays.

威廉？伦琴发现了x射线。

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The first-ever Nobel prize in physics was awarded to Wilhelm Roentgen of Germany for his discovery of X-rays, and with this year's winners the total number of recipients has reached 194.

BBC: Serge Haroche and David Wineland