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。

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以上时候但那只会出现在一些极端条件下。

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

这些沙粒大小微粒发出辐射，能够使分和原电。

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

这种电辐射有足够能量把电从原中剥出来。

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

彗星释放气体分被太阳紫外线电。

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

还有一些环因素如胸部X线或CT扫描等电辐射，也是高危因素。

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

随着初代恒星发出辐射越来越大，电氢原再次被分解为质和电。

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

我挺不错，因为你精力充沛地跟辐射奋战。

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

科学家区别电辐射暴露一个方法是一种叫西韦特单位。

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

它要么失去一个电，要么到一个电，从而到一个电荷。

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

所有核辐射都是电，然而电磁辐射只有最高能量才是。

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

这个叫做电辐射因为一个已经失去或到电原叫做。

Ionizing radiation tears the cellular structure apart.

电辐射会破坏细胞结构。

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

幸运是，急性暴露很少见，但我每天都暴露在较低级电辐射下既来自于自然，也来自于人造物质。

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

当能量形成导线剥空气中带负电荷电时，就使平面上朝着带负电荷电极移动分成为电。

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

最大健康危害发生在大量电辐射在短时间内击中我时，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，手机和微波在光谱低频端，因此使用它没有电辐射危险。

The solar wind is made of protons, electrons, cosmic rays, all of these kinds of charged particles that could ionize the atmosphere, as we call, sputter it away.

太阳风是由质，电，宇宙射线组成，所有带电粒会电大气层，就象我说那样，把它吹散。

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.

你身体经常修复小量电辐射造成损害。如果无法修复，损害带来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，我暴露度基本很低，而且像检测你家氡含量和抹防晒霜这样决策能够帮助减少相关健康危害。