在面积和人口方面，欧盟和中国相比有多大？
In terms of size and population, how big is the European Union compared with China?
就面积和人口来说，与中国相比欧盟有多大？
In terms of size and population, how big is the European Union compared with China?
还提出研究中国自然保护区中人口、中国国土面积及分类和中国各种类型土地的适宜保护面积，探讨“在中国多大的国土面积可以建设为自然保护区?”
I also preliminarily studied human population, landscapes type of nature reserves to discuss suitable portion of strictly protected area in forests, grasslands, wetlands, desserts in China.
还提出研究中国自然保护区中人口、中国国土面积及分类和中国各种类型土地的适宜保护面积，探讨“在中国多大的国土面积可以建设为自然保护区?”
I also preliminarily studied human population, landscapes type of nature reserves to discuss suitable portion of strictly protected area in forests, grasslands, wetlands, desserts in China.
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