Fluorescent light bulbs appear white but reveal specific emission lines instead of a continuous spectrum.

荧光灯泡看起来是白色的，但显示的是特定的射线，而不是连续的光谱。

They don't think that they're helping solve the problem very much just by or only by changing their light bulbs to special kinds of light bulbs that saves energy – fluorescent light bulbs.

他们不认为仅仅通过或仅通过将灯泡换成特殊类型的节能灯泡——荧光灯泡，就可以帮助解决问题。