When a meteor strikes Earth, it creates an explosion that compresses the rock in a circular region.
当流星撞击地球，引起的爆炸会把一个圆形区域里的岩石压碎。
Journaling is the process of logging changes to the file system through a journal (which is a dedicated circular log on a contiguous region of the disk).
日志记录就是通过日记(磁盘上相邻区域的专门循环记录)记录文件系统的变更的过程。
The eye is a region of mostly calm weather found at the center of strong tropical cyclones. The eye of a storm is a roughly circular area and typically 30-65 km in diameter.
“风眼”是强热带气旋中心的一块平静区域，通常呈圆形，直径30 - 65千米。
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