The Earth itself has a magnetic force.

球本身也有。

So, well, he called it magnetism.

所以他称之为。

Birds use it to help them navigate over thousands of miles - it tells them where north is.

鸟儿们用导航，飞行数千英里--可以告诉它们哪边是北方。

A compass is ruled by the magnetic force of the Earth.

指南针受球的控制。

The others are gravitational and magnetic.

其他的是引和。

Your magnetic boots are now engaged.

您的靴已经启用。

But magnetism is very different from gravity.

但是的引之间存在很大的差别。

The loops are caused by the twisting of the sun's basic magnetic field.

圈是因太阳基本场的扭曲所致。

In place of an axle, the wheel was suspended between two magnetic forks.

没有车轴，轮子悬浮在两个叉子之间。

There is a popular attraction here called the Whirly Dirly.

这里有个吸引人的 “旋风”。

Packing 45 Teslas of magnetic force.

拥有 45 特斯。

So, uh, Jerry, big fan of the Whirly Dirly, are you?

杰里，你很喜欢旋风吗？

And the key to that mess is magnetism.

而造成这篇混乱的关键是。

Kent used changes in Earth's magnetism to find the age of fossils in Greenland.

肯特通过球的发现了格陵兰化石的年头。

Are they just gonna fly out of my head?

它们会因为从我脑子里飞出来吗？

Around the edges of sunspots, the magnetic field lines are concentrated.

在太阳黑子的边缘，线是集中的。

First she mentioned maglev-that's a short way of saying magnetic levitation.

首先她提到了悬浮——这是漂浮的简称。

It charges magnetically, there's none of that old lightning port stuff going on.

它是充电的，不像以前那种带闪光的接口。

So, magnetism is not a good guide to navigating in space.

因此，不能很好帮助人们在太空中找到方向。

It's when trains travel on magnetic track rather than conventional rails.

这是指火车在轨道上行驶，而不是传统的轨道。