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Close to the centre of the sun, a group of sunspots is visible.
接近太阳表面中心之处，一个黑子群清晰可见。
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Sunspots are areas in sun with increased magnetic activity.
太阳黑子是太阳上磁活动频繁的区域。
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Sunspots are areas in sun with increased magnetic activity.
太阳黑子是太阳上磁活动频繁的区域。
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