日期：
来源：雅诚德英语网
Was John Denver one of the most famous country singers in America in the 19th century?
约翰·丹佛是19世纪美国最著名的乡村歌手之一吗？
Was John Denver one of the most famous country singers in America in the 19th century?
约翰·丹佛是19世纪美国最著名的乡村歌手之一吗？