This is an 11-year fluctuation in sunspot numbers.

这是一个11岁的波动太阳黑子数。

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Any changes in sunspot Numbers reflect changes inside the sun.

黑子数目的任何改变都反映了太阳内部活动的变化。

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Thanks to their efforts we know that sunspot Numbers ebb and flow in cycles lasting about 11 years.

多亏他们的努力，我们知道了太阳黑子会以11年为一个循环周期出现又消退。

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This involves calculating the correlation between, say, the neutrino and sunspot numbers, and then shuffling up the neutrino numbers randomly and recalculating the correlation.

ECONOMIST: Particle physics