Translate the following underlined sentences into Chinese.Amazon is by far the largest remaining rainforest area left on our planet. It's about 6 to 7 million square kilometers, about two-thirds the size of the United States including Alaska. Sixty percent of it is in Brazil, but the rainforest also extends to Bolivia, Peru, Ecuador, Columbia, Venezuela, French Guiana and Surinam.
亚马孙是地球上现存的最大的一片雨林地区，面积大约有600万－700万平方公里。这大致是包括阿拉斯加在内的美国面积的2/3。
