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At first glance, dust storms do not seem very fascinating. Winds pick up fine particles from the ground, and then the air becomes thick with dust. What is interesting, though, is that dust storms can travel across the ocean, sometimes from continent to continent. Such dust storms are worth investigating.
乍看之下，沙塵暴似乎不怎么引人注意。地面的細沙被風卷起，空氣中便充滿厚厚的灰塵。但有趣的是，沙塵暴能穿洋渡海，有時還能橫越大洲。這樣的沙塵暴值得我們去好好研究一下。
