A radioactive atom could transmute itself into an entirely different kind of atom.

放射性原子本身能嬗变为性质完全不同的另一种原子。

youdao

Suppose we've got some sort of radioactive atom, which has a certain chance of decaying.

假定我们有某种放射性原子，它们以一定的几率衰变。

youdao

The original theory involved putting a hypothetical cat into a theoretical box along with an imagined radioactive atom.

他的理论是把一只假设的猫放到理论上存在的盒子里再扔进去一个想象中的放射性原子。

youdao

Suppose we've got some sort of radioactive atom, which has a certain chance of decaying.

假定我们有某种放射性原子,它们以一定的几率衰变

耶鲁公开课 - 死亡课程节选

The technique is so sensitive that it can detect a single radioactive carbon atom hiding among a quadrillion (one million billion) ordinary ones.

ECONOMIST: Monitor