把下面这段话翻译成流利的英文：21世纪的城市化进程中不仅有机遇也有挑战
In the urbanization process of the 21st century, there are not only opportunities but also challenges.
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安全问答是一个知识全球问答,包含丰富的问答知识
In the urbanization process of the 21st century, there are not only opportunities but also challenges.
原文地址: https://www.cveoy.top/t/topic/i96A 著作权归作者所有。请勿转载和采集!