sunspot

IPA(Pronunciation)

(astronomy) A region on the sun's surface with a lower temperature than its surroundings and intense magnetic activity.

Japanese Meaning

太陽の表面に存在する、周囲より温度が低く、強い磁場活動が見られる領域

During the solar minimum, astronomers tracked a lone sunspot that lasted for three solar rotations.

太陽活動極小期には、天文学者たちは単独の黒点を追跡し、それは太陽の自転が3回続く間持続した。

Sense（1）

(astronomy) A region on the sun's surface with a lower temperature than its surroundings and intense magnetic activity.

sunspots

（ plural ）