1. He pointed out that the shape of sunspots weren't circular. 他指出，太阳黑子不是圆形的。
2. The fact that sunspots are magnetic fields accounts for their dark appearance. 太阳黑子是磁场的事实解释了它们的黑色外观。
3. Astronomers did eventually figure out what sunspots had to do with magnetic fields. 天文学家最终确实发现了太阳黑子与磁场的关系。
4. He started keeping tracks of sunspots, mapping them, so he wouldn't confuse them with any potential new planet. 他开始追踪太阳黑子，标注它们的位置，这样就不会把它们和任何潜在的新行星混淆了。
5. What Galileo proposed was that sunspots were indeed a feature of the Sun, but he didn't know what kind of feature. 伽利略所提出的观点是，太阳黑子确实是太阳的某一个特征，但他不知道是什么特征。
