翻译： It covers five and a half million square kilometers of the Amazon Basin and翻译：It covers five and a half million square kilometers of the Amazon Basin and spreads across nine countries .
问题描述：
翻译： It covers five and a half million square kilometers of the Amazon Basin and
翻译：
It covers five and a half million square kilometers of the Amazon Basin and spreads across nine countries .
答
它涵盖了五个半万平方公里的亚马逊河流域 且在九个国家蔓延。
答
它涵盖了五个半万平方公里的亚马逊河流域,在九个国家蔓延。
答
亚马逊河横跨9个国家,面积550万平方公里,