noun下载🔗分享太阳黑子 A region on the sun's surface with a lower temperature than its surroundings and intense magnetic activity.例子:"The science class learned that a sunspot is a cooler, darker area on the sun caused by strong magnetic fields. "科学课上,同学们学到太阳黑子是太阳表面由于强磁场引起的温度较低、颜色较暗的区域。astronomyphysicsspacenatureenergyphenomena与AI对话词汇游戏阅读练习