上知天文， 下知地理
上知天文， 下知地理上知天文， 下知地理[shàng zhī tiān wén xià zhī dì lǐ]1.■know everything in heaven above and the earth underneath; astronomy on one hand, geography on the other; know astronomy as well as geography
上知天文， 下知地理上知天文， 下知地理[shàng zhī tiān wén xià zhī dì lǐ]1.■know everything in heaven above and the earth underneath; astronomy on one hand, geography on the other; know astronomy as well as geography
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