Then, as the sky darkened, the stars became visible, the Earth’s spin making them trace their own circular paths about the north and south celestial poles.
随后，天色渐黑，星空依稀可见，地球的自转使得恒星在南天极和北天极沿着个子的轨道划下绚丽光环。
With a pile more money, you can cut the proton and neutrons into their smallest parts, quarks, you will still have magnets with North and South poles.
如果你还有大把的钱，你可以把质子和中子分成组成它们的最小组分：夸克，然而你还是只会得到拥有南北极的磁体。
The most common impacts for the average person are the glowing auroras around the north and south poles, and the researchers said those could be visible this weekend.
对于普通人来说，肉眼可见的影响包括南北极频繁出现的极光，科学家认为极光出现的数量和时长将在本周末达到最大。
If you cannot have one without the other, it is like the north and south poles of a magnet.
这种统一是指你不能拥有一个而不拥有另一个，它就像一块磁铁的南北两极。你不能拥有一个单极磁铁。
They act, in other words, like tiny bar magnets with north and south poles, making them rotate in a magnetic field.
打个比方，这个“磁极矩”可以让电子像一个微型的条形磁铁那样在磁场中旋转。
These changes are mild compared to what Earth's magnetic field has done in the past —sometimes the field completely flips, with the north and the south poles swapping places.
这种变化与地球磁场曾经发生过的变化相比还算温和的——有时地球磁场会完全翻转，地磁北极和地磁南极会对调。
These changes are mild compared to what Earth's magnetic field has done in the past - sometimes the field completely flips, with the north and the south poles swapping places.
这种变化与地球磁场曾经发生过的变化相比还算温和的——有时地球磁场会完全翻转，地磁北极和地磁南极会对调。
Some people believe that the Earth's North and South poles weren't always located where they are now.
有些人相信地球的北极和南极以前并不是在它们现在所在的位置。
You've just made two smaller magnets each with their own North and South poles.
你仅仅是得到了两个拥有各自的两极的更小的磁体罢了。
Vast glowing rings, called auroras, often appear far above the North and South Poles. These rings can be more than 12, 000 miles (19, 312 kilometers) around.
极光是一种辽阔灿烂的环状光带，常常出现在南北两极地区的高空之中，这些光环可蔓延至12，000英里（19，312千米）长。
The scientists were also shocked by data showing that Uranus' magnetic north and south poles were not closely aligned with the north-south axis of the planet's rotation.
领科学家震惊的是数据显示天王星的磁场南北极与行星的旋转南北轴线极不一致。
Very magnet ever made or found always has at least two poles, called North and South.
我们制造或找到的磁体都至少有两极，称为北极和南极。
"These buried ice sheets that extend from the poles all the way down to 45 degrees or so (north and south latitude) don't quite cover half of the planet, but (they) come close," he said.
“这些埋藏着的冰原从两极一直延伸到(北纬和南纬)45度左右，没能完全覆盖半个火星，但(覆盖面)接近这一水平。”Shane Byrne表示。
The earth revolves around the axis which joins the North and South Poles.
地球围绕连接北极和南极的轴旋转。
The alignment of the iron particles occurs because each of the iron filings becomes a miniature magnet with north and south poles.
铁粒子排列成线是由于每个铁屑都变成了一个拥有南极和北极的小型磁铁。
Astronomers saw that the planet was red with white areas at its north and south poles.
天文学家们看到，这颗红色星球的南北两端有白色的区域。
The central hypothesis is not listed in the project distribution poles, and the nature of the north and south poles were mixed, then I will plan not to say yes or no clothes.
中央的假设是不列在项目分配的极点，和南北两极的性质是混合的，然后我会计划不说是或没有衣服。
In the frigid zone, not only in winter, even if the north and south poles can also distinguish the four seasons.
在寒带，并非只有冬季，即使南北两极亦能分出四季。
The Equator is a great circle midway between the North and South Poles.
赤道圈是一个位于南北极当中的大圆周。
The equator is a great circle midway between the north and south poles .
赤道圈是一个位于南北极当中的大圆周。
You may wonder why the magnet's poles point north and south?
你可能会感到奇怪，为什么磁铁的两极会指向南北呢？（加了数词）
On Earth, it is always cold at the North and South Poles and it is always hot at the equator, but this is not true on Uranus.
在地球上，北极和南极总是最冷，赤道总是最热，但是在天王星上这个规律不正确。
At certain times of the year the ozone layer becomes extremely thin near the north and south poles.
一年中的某些时候，北极和南极附近地区的臭氧层极为稀薄。
You may wonder why the magnet 's poles point north and south.
你会感到好奇，为什么磁铁的两极会指南北呢？
It has been suggested that birds can sense the magnetic lines of force stretching from the north to south magnetic poles of the earth, and so direct themselves.
有人认为，鸟类能觉察得出地球自北向南磁极的磁力线，因而能为自己导向。
It has been suggested that birds can sense the magnetic lines of force stretching from the north to south magnetic poles of the earth, and so direct themselves.
有人认为，鸟类能觉察得出地球自北向南磁极的磁力线，因而能为自己导向。
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