就像沙漏里的沙子(Like sands through the hourglass)

今天，我们庆祝大沙丘国家公园和保护区（Great Sand Dunes National Park and Preserve）的生日，该保护区拥有750英尺（或更高）的沙丘，面积超过30平方英里。但高耸的沙山——北美最高的——只是科罗拉多州令人瞠目的景观的一个特征，包括针叶林、高山湖泊和湿地。85000英亩的公园和保护区甚至包括高海拔地区的苔原，在那里，它与桑格雷德克里斯托山脉的底部相对。
原文：
Today we celebrate the birthday of Great Sand Dunes National Park and Preserve, which boasts 750-foot (and higher) sand dunes that cover more than 30 square miles. But the towering hills of sand – the tallest in North America – are just one feature of an eye-popping Colorado landscape that includes conifer forests, alpine lakes, and wetlands. The 85,000-acre park and preserve even encompasses stretches of tundra at the higher elevations, where it edges up against the base of the Sangre de Cristo Mountains.
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