sunspot
🇺🇸
/ˈsʌnspɑːt/
🇬🇧
/ˈsʌnspɒt/
A sunspot is a temporary dark area on the surface of the sun, caused by magnetic activity.
Scientists study sunspots to better understand solar activity and its effects on Earth.
科學家研究太陽黑子,以更好地理解太陽活動及其對地球的影響。