SirWilliamHerschel discovered the planet Uranus in 1781 with a hand-made reflecting telescope.
威廉·赫歇尔先生在1781年发现天王星，用的是手工制作的反射望远镜。
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In 1781, astronomer SirWilliamHerschel spotted an object moving in the sky and originally thought it was a comet but later realized its planetary nature.