黑子是太阳表面比较暗的区域，也叫活动区。那里经常发生耀斑和日冕物质抛射等剧烈的喷发现象。
Sunspots are dark patches marking magnetically active regions that often host solar flares and violent belches called coronal mass ejections.
耀斑-激波传播的三维特性与太阳黑子活动区，日冕及冕洞的磁结构有密切关系。
Three-dimensional propagation properties of the flare-shock wave would bear close relations to the magnetic structure on the sun and the large scale structure in the interplanetary 'space.
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