中科新闻网是一部内容开放、自由的互动网络百科全书客观、专业、权威的知识性百科全书
来源:百度文库 编辑:中科新闻网 时间:2024/05/09 07:20:28
翻译好的:http://translate.google.com/translate?hl=zh-CN&sl=en&u=http://americanhistory.about.com/&prev=/search%3Fq%3DAMERICA%2BHistory%26hl%3Dzh-CN%26lr%3D%26newwindow%3D1%26sa%3DG原稿:http://americanhistory.about.com/