For a sunspot to form on the solar surface, the magnetic field needs to attain a certain strength to push the surface plasma aside, exposing the solar interior as a cool spot — a sunspot.
在太阳表面，磁场强度必须强到能推开表面的等离子体，将温度较低太阳内部的暴露在外，形成一个太阳黑子。
2
Italy has been a relative bright spot in Europe for solar projects as other countries, most notably Germany, reduce their subsidies for solar projects.
在太阳能项目方面，意大利一直是欧洲地区的相对亮点，因为其他国家，比如德国减少了对太阳能项目的补贴。
3
That is probably not because most solar systems contain only one planet, but rather because it is hard to spot several at once.