1·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。
2·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。
3·That's because magnetic fields reduce the pressure exerted on the gases inside of them, making the spots cooler than the rest of the Sun's surface.
这是因为磁场降低了施加在内部气体上的压力，使得太阳黑子比太阳表面的其他部分温度更低。
4·Magnetic fields reduce blood viscosity.
磁场可以降低血液粘度。
5·Instead of air pressure, it USES magnetic fields.
它不是使用风压，而是磁场。
6·For example, magnetic fields certainly are not gradients.
举个例子，磁场就不是梯度。
7·I want to tell you things about electric and magnetic fields.
我将要讲电场和磁场。
8·Which suggests we might be able to see magnetic fields in some way.
这说明，我们可能通过某种方式看到磁场。
9·Normally the galaxy's magnetic fields protect us from that radiation.
正常来说银河的磁力场会保护我们免受这种辐射侵袭。
10·They are fast-spinning stars with extremely powerful magnetic fields.
它们是快速旋转的恒星，其周围有极强的磁场。