NASA's SDO Solar Dynamics Observatory has captured stunning new images of the sun. The never seen before images show materials streaming outward fromsunspotsincluding a large wave travelling across the sun, known as thecoronalmassejection. 美国国家...
UNIT 2 Days and Months 日和月 Lesson 12 Rain and Sun 雨和太阳 1.What is it?这是什么? This is the sun.这是太阳. The sun is hot.太阳很热. This is cloud and rain.这是一片云和雨. The cloud is above.云在上面. The rain is belo...
