美洲王蝶是一种色彩斑斓的美丽蝴蝶。为躲避加拿大和美国的冬季严寒,数以亿计的王蝶每年都要南迁到墨西哥的温暖森林里繁衍生息。在超过5000公里的迁徙路上,处处都潜藏着凶险:崇山峻岭间的风霜严寒、大海上的狂风暴雨,沙漠中的烈日干旱……一对健壮有力的翅 The butterfly is a colorful and beautiful butterfly. In order to avoid the winter cold weather in Canada and the United States, hundreds of millions of king butterflies migrate to the warm forests of Mexico each year to flourish. In the more than 5,000 kilometers of the trekking path, there are treacherous dangers all over the place: frosty mountains and snowstorms, sea stormy weather and scorching sun in the desert ...... A pair of robust and powerful wings