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

彗释放的气体分子被太阳的紫外线电离。

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

当宇宙还处于电离状态时，在重组之前，它是不透明的。

Ionizing radiation tears the cellular structure apart.

电离辐射会破坏细胞结构。

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

随着初发出的辐射越来越大，电离的氢原子再次被分解为质子和电子。

Under those conditions, hydrogen is completely ionized, which means the electrons in the atoms are stripped from their protons.

在这种条件下，氢被完全电离，这意味着原子中的电子被从质子剥离出来。

This might happen when too much ionized calcium is excreted.

当过多的钙离子被排出体外时，可能会发生这种情况。

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

这种电离辐射有足够的能量把电子从原子中剥离出来。

That protection keeps Solar wind and other ionizing radiation off of the surface.

这种保护使太阳风和其他电离辐射远离地球表面。

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

所有的核辐射都是电离，然而电磁辐射只有最高能量的才是。

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离子辐射，能够使分子和原子电离。

Low levels of ionized calcium affect a variety of cellular processes, in particular, electrically active neurons.

低水平的离子钙会影响多种细胞过程，特别是神经元的电活动。

If you were on the surface, you'd be a vaporized and ionized smear.

如果你在其表面上，你将会是一个被蒸发和电离的污迹。

The researchers spotted a huge cloud of plasma, some 300 light-years long, containing highly ionized atoms.

研究人员发现了包含了高离态原子的、长度约为300光年的巨大等离子云。

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扫描等电离辐射，也是高危因素。

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，因为你得精力充沛地跟离子辐射奋战。

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。

So the universe went from neutral to ionized.

所以宇宙从中性变为电离。

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

科学家们区别电离辐射暴露的一个方法是一种叫西韦特的单位。

And when the very first stars and galaxies switched on, they ionized that hydrogen.

当最早的和系启动时，它们将氢电离。

Plus, these particles are ionized so they don't absorb the light like the neutral hydrogen gas.

另外，这些粒子被电离， 因此它们不会像中性氢气那样吸收光。