These efforts are providing an intriguing explanation for how polarity reversals occurred in the past and clues to how the next such event may begin 这些工作，对于过去的磁极反转提出了一套很有意思的解释，更对下一次的反转事件将如何展开，提供了新的线索。
2.
Computer - generated polarity reversals provided researchers with the first rudimentary glimpse of how such switches may originate and progress [ see box on next page ] 电脑所模拟的磁极反转，让研究人员首次能对于此转换过程的开始及演进可以有初步了解（见下页模拟磁极反转） 。
