sunspot

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Sunspot activity is correlated with the total amount of energy we receive from the sun.
太阳黑子的活动性与我们从太阳那获得的总能量密切相关。
The stunning picture was taken using the Big Bear Telescope in California and is the best photo of a huge sunspot that is around 8, 000 miles in diameter.
这令人震撼的照片是由加州大熊湖天文台的望远镜拍摄的，这是有关直径8,000英里左右的巨大太阳黑子的最佳照片。
The potentially cooling influence of the sunspot activity could not cancel out the warming caused by human activities that generate climate-warming greenhouse gases.
太阳黑子活动可能带来的降温还不足以抵消人类活动所产生的温室效应气体对全球暖化的影响。

It follows instead the pattern of natural causes, such as sunspot cycles, and ocean temperature cycles.
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They also argue about the effect of changes in the sunspot cycle on temperatures.
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This is predicted due to important modulating cloud-forming influences of cosmic rays throughout periods of reduced sunspot activity.
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a dark spot on the surface of the sun that appears for a few days or weeks and then disappears

Sunspots are dark cool patches that appear on the surface of the sun and last for about a week.