The threat from nuclear radiation remains.

而核辐射的威胁仍然存在。

About 30 people were killed in the blast, and the nuclear radiation spread across borders.

此次爆炸造成30多人丧生，而核辐射甚至扩散到邻国。

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。

Nuclear radiation comes from natural sources, like radon, a gas which seeps up from the ground.

核辐射来源于自然物质，例如氡，一种从地下渗出的气体。

As in real warfare, those weapons may be conventional (surgery), chemical (cancer-killing drugs) or nuclear (radiation therapy).

就像在真实的战场上一样，这些武器可能是常规武器（外科手术），化学武器（抗癌药物），或者核武器（放射治疗）。

The long-lasting damage of nuclear radiation caused an entire city and its population to turn into powder.

核辐射的长期损害 致使整个城市和它的人口 化为粉末。

The answer begins with understanding that the word radiation describes two very different scientific phenomena: electromagnetic radiation and nuclear radiation.

电磁辐射和核辐射。

Nuclear radiation, on the other hand, originates in the atomic nucleus, where protons repel each other due to their mutually positive charges.

另一边呢，核辐射源于原子核，带有正电荷的质子正正相斥。

To be clear, whatever happened last Thursday did not appear to have given off a large plume of nuclear radiation like the Chernobyl disaster did.

需要明确的是，上周四发生的事故似乎并未像切尔诺贝利灾难那样释放出大量核辐射。

To be clear, whatever happened last Thursday did not appear to have given off a large plume of nuclear radiation like the Chernobyl disaster did but more than 30 years later Chernobyl's effects are still rippling across Russia.

需要明确的是，上周四发生的事情似乎并没有像切尔诺贝利核事故那样释放出大量的核辐射，但30多年后，切尔诺贝利的影响仍然波及整个俄罗斯。