Yet few world-class rivers anywhere have etched a more enduring impression on as many millions for as many years.
然,
界上很少有这样大
河流
给这样多
人留下这样长
令人难忘
印象。
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But there's been a long-running debate over whether it's much older. And, yesterday, researchers published a study in the journal " Science, " arguing these majestic formations were formed by two much older rivers cutting through the landscape some 70 million years ago.
但是关于它是否更老的争论由来已久。昨天,研究人员在《科学》杂志上发表了一项研究,认为些雄伟的地
是由大约 7000 万年前两条古老得
的河流
过
片土地形成的。