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科尔多瓦(在今西班牙)人口45万。公元1000年时,该市是全世界人口最多、也最繁华的城市。开封(中国)人口40万。
Cordoba (in this Spain) has a population of 450,000. In 1000, the city was the most populous and the most prosperous city in the world. Kaifeng (China) population 400,000.