城市是人类文明的结晶，城市化则是人类社会进步的重要标志。
Cities are crystallization of civilizations of human beings, and urbanization is an important mark of the progress of human society.
礼仪是人类文明和社会进步的重要标志。
Etiquette is an important indicator of human civilization and social progress.
礼仪是人类文明和社会进步的重要标志。
Etiquette is an important indicator of human civilization and social progress.
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