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。

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。

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边剥离出来。

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。

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

彗星释放的气体分子被太阳的紫外线电离。

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。

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，电离的氢原子再次被分解为质子和电子。

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。

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。

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。

The higher the level of ionizing radiation, the faster the device discharges.

电离辐射水平越高， 设备放电速度越快。

Typically this difference in energy is released as what's called ionizing radiation.

通常，这种能量差异以所谓的电离辐射形式释放。

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

当最早的恒星和星系启动时，它们将氢电离。

All of the tardigrade samples were exposed to both ionizing solar and galactic cosmic radiation.

所有的缓步动物样本都暴露在电离太阳和银河宇宙辐射下。

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

这个叫做电离辐射因为一个已经失去或得到电子的原子叫做离子。