... A 'green power' program regularly invites customers to pay $4 to $10 extra per month to switch to clean energy.

VOA: standard.2010.03.23

So that's why we're giving off extra energy.

这也就是我们放出多余能量的原因。

麻省理工公开课 - 化学原理课程节选

PROFESSOR: No. So, compared to the atoms, it should be somewhat the same energy, we shouldn't get any extra stabilization from forming the molecule.

不会，所以和原子相比，它的能量相同，形成分子并不会带来额外的稳定性。

麻省理工公开课 - 化学原理课程节选

That makes sense because we're losing energy, we're going to a level lower level, so we can give off that extra in the form of light. And we can actually write the equation for what we would expect the energy for the light to be.

这很合理，因为我们在损失能量,我们要到一个更低的能级去,我们要以光的形式给出额外的能量,我们可以写下光能量的方程。

麻省理工公开课 - 化学原理课程节选