语言是人类文明进步极为重要的标志，也是多彩缤纷的世界中人们相互沟通的重要媒介。
Language embodies progress of human civilization; it is an important medium that makes communication between people living in a diverse world possible.
城市是现代产业和人口集聚的地区，也是人类文明和社会进步的标志。
The city is the place where modern industries and people are concentrated, but also a symbol of human civilization and social progress.
城市是现代产业和人口集聚的地区，也是人类文明和社会进步的标志。
The city is the place where modern industries and people are concentrated, but also a symbol of human civilization and social progress.
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