These sand-sized particles emit ionizing radiation, capable of separating electrons from molecules and atoms.

这些沙粒大小的微粒发出的辐射，能够使分和电。

This ionizing radiation has enough energy to rip electrons from atoms.

这种电辐射有足够的能量把电从中剥出来。

When the Universe was still ionized, prior to recombination, it was opaque.

当宇宙还处于电状态时，在重组之前，它是不透明的。

There are also other environmental risk factors like ionizing radiation, like from chest X-rays and CT scans.

还有一些环境因素如胸部X线或CT扫描等电辐射，也是高危因素。

If you paid attention, you learned how pure water ionizes to form hydronium and hydroxide ions in reversible reactions.

也会出现0以下或是14以上的时候但那只会出现在一些极端条件下。

We ate really well there, because you need to keep your strength up to fight the ionizing radiation.

我们吃得挺不错的，因为你得力充沛地跟辐射奋战。

One way scientists compare ionizing radiation exposure is a unit called the sievert.

科学家们区别电辐射暴露的一个方法是一种西韦特的单位。

Gas molecules emitted by the comet get ionized by the Sun's ultraviolet light.

彗星释放的气体分被太阳的紫外线电。

This is known as ionizing radiation because an atom that has lost or gained electrons is called an ion.

这个做电辐射因为一个已经失去或得到电的做。

All nuclear radiation is ionizing, while only the highest energy electromagnetic radiation is.

所有的核辐射都是电，然而电磁辐射只有最高能量的才是。

The growing radiation from those first stars ionized hydrogen atoms, split them back into protons and electrons.

随着初代恒星发出的辐射越来越大，电的氢再次被分解为质和电。

And all those atoms are ionized: they either lose an electron or gain one to give them a charge.

它们要么失去一个电，要么得到一个电，从而得到一个电荷。

Fortunately, acute exposures are rare, but we are exposed daily to lower levels of ionizing radiation from both natural and man-made sources.

幸运的是，急性暴露很少见，但我们每天都暴露在较低级的电辐射下既来自于自然，也来自于人造物质。

Ionizing radiation tears the cellular structure apart.

电辐射会破坏细胞结构。

When energized wires strip negatively charged electrons from the air ionizing the molecules that move toward negatively charged electrodes at the planes tale.

当能量形成的导线剥空气中带负电荷的电时，就使平面上朝着带负电荷的电极移动的分成为电。

The biggest health risk occurs when lots of ionizing radiation hits us in a short time period, also known as an acute exposure.

最大的健康危害发生在大量的电辐射在短时间内击中我们时，或急性暴露。

In comparison, cell phones and microwaves operate at the lower end of the spectrum, so there is no risk of ionizing radiation from their use.

对比来看，手机和微波在光谱的低频端，因此使用它们没有电辐射的危险。

Your body often repairs damage from small amounts ionizing radiation, and if it can't, the results of damage may not manifest for a decade or more.

你的身体经常修复小量电辐射造成的损害。如果无法修复，损害带来的结果十年或更久都不会显现。

For the remainder that is ionizing, our exposures are usually low, and choices like getting your home tested for radon and wearing sunscreen can help reduce the associated health risks.

余下那些电的，我们暴露度基本很低，而且像检测你家的氡含量和抹防晒霜这样的决策能够帮助减少相关的健康危害。

In the form of lead dioxide it's highly conductive which makes it useful in batteries and it's so incredibly dense that it's great at blocking out things like ionizing radiation.

在二氧化铅的形态下，它极易导电，所以尤其适合用在电池上，并且它的密度非常之高，能很好地隔绝电辐射之类。