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沙漠的色彩奇观：大自然的鬼斧神工
你以为沙漠只有金黄色的沙丘？那可大错特错了！今天，我们揭开沙漠的神秘面纱，带你领略那些绚丽多彩的沙子，它们不仅是自然的艺术品，更是地球历史的见证。
宇宙知识探秘304/345
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