zàiqiché huδchefāmingzhiqian在汽车、火车发明之前，dongwucengshirénléizhongyaodejiaotonggongju动物曾是人类重要的交通工具。tāmen ping jiedutéde bén ling它们凭借独特的本领zāibu tónghuan jing z（试读）...