与中国相比,美国有什么地理优势 用英语讲解
问题描述：
与中国相比,美国有什么地理优势 用英语讲解
答
英文； Comparison of "area" of such data,the Hongkong,Singapore is reasonable,for us is not reasonable.For this country,even though the area is reduced by half,but thousands of people / sq km data dou...