时间伯伯，你是最伟大的旅行家，你从不犹豫你的脚步，你走过历史的每一个时代。时间一年一年的过去了，人们到哪里去寻找时间的踪迹呢？作者以拟人化的手法，生动介绍了岩石记录时间的奇异功能，为科普文章的典范。
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