Sometimes electrons in those atoms get into an excited state, and when they come back down again they give off light.

有时原子当中的电子被激发，而当它们回到基态时，便发出了光。

Imagine there's an atom of nickle-60 with one or more of its electrons in an excited state.

想象一下，有一个镍 60 原子，它的一个或多个电子处于激发态。

But the patient, who was in a very excited state, had an attack of fever and became delirious.

但是，处于非常兴奋状态的病人突然发烧并变得神志不清。

In the excited state of American opinion, few gave heed to the grave breach of diplomatic courtesy committed by breaking open private correspondence.

在美国舆论的兴奋状态下，很少有人注意到打开私人信件是严重违反外交礼仪的行为。

Let's take the example of nickle-60. Imagine there's an atom of nickle-60 with one or more of its electrons in an excited state.

让我们以镍 60 为例。想象一下，有一个镍 60 原子，它的一个或多个电子处于激发态。

Margaret did not care if their gifts had prolonged the strike; she did not think far enough for that, in her present excited state.

玛格丽特不在乎他们的礼物是否延长了罢工时间。在她目前的兴奋状态下，她想的还不够远。

This form of radiation is often released when electrons transition from an unstable excited state, to a more stable state that has a lower energy.

当电子从不稳定的激发态跃迁到能量较低的更稳定态时，通常会释放这种形式的辐射。

But when she went back to her husband, she found him in an excited state of mind, and Walter standing before him in the darkness.

但是当她回到她丈夫身边时， 她发现他正处于一种兴奋的状态， 沃尔特在黑暗中站在他面前。

In quantum mechanics, one of the most important properties of a many-body system is the difference in energy between its ground state and its first excited state.

在量子力学中，多体系统最重要的性质之一是其基态与第一激发态之间的能量差。

So for example, if that uranium atom is at an excited state when it decays in to thorium, it can simultaneous release gamma waves as well as the alpha particle I already mentioned.

因此，例如，如果铀原子在衰变成钍时处于激发态，它可以同时释放伽马波以及我已经提到的阿尔法粒子。

This kind of decay usually occurs when a nucleus is in an excited state, which can happen because the nucleus is decaying from a larger form, or because it collided with a high-energy particle, among other reasons.

这种衰变通常发生在原子核处于激发态时，这可能是因为原子核正在从更大的形式衰变，或者因为它与高能粒子碰撞等原因。