柯林斯词典megacity /ˈmɛɡəˌsɪtɪ/ 1. N a city with over 10 million inhabitants ( 超过1000万人口的)大城市 返回 megacity剑桥词典a very large city , especially one with more than 10 million people living in it 巨型城市(人口超过一千万的城市) 返回 megacity