and at its widest it's 17 miles across. 最宽的地方达17英里

74. Arizona's Colorado river has eaten away at the desert's sandstone
    亚利桑那州的科罗拉多河 冲走了大量沙石
75. to create a gigantic canyon.
    形成一个巨大深邃的峡谷
76. It's over a mile deep
    它的深度超过1英里
77. and at its widest it's 17 miles across.
    最宽的地方达17英里
78. The Grand Canyon.
    这就是大峡谷
79. This river has cut the world's longest canyon system -
    这条河冲蚀出了世界上最长的峡谷系
80. a 1,000 mile scar clearly visible from space.
    在太空中也能清楚地看到 这条长达1000英里的沟壑

来自《行星地球 第一季 第三集 Planet Earth S01E03 淡水》第 77 行