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在一千九百多年前,有个像我们一样大的孩子,特别喜欢数星星,他从小热爱天文,长大成了著名的天文学家。他就是我国汉朝的张衡。公元78年,张衡出生在河南南阳一个很有名望的诗书世家。他的祖父张堪学识渊
More than 1,900 years ago, there was a child as big as us and a few stars. He loved astronomy and grew up to become a famous astronomer. He is China’s Han Dynasty Zhang Heng. AD 78, Zhang Heng was born in Nanyang, Henan Province, a very famous poetry family. His grandfather learned from Zhang Kan