You all know how when you take a crystal prism and pass a beam of sunlight through it, you get a spectrum, which looks like a continuousband of rainbow colors.
你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。
2
A band spectrum consists of groups of wavelengths so close together that the lines appear to form a continuousband.
带状光谱由一组波长组成，它们密集在一起，许多线看起来就像是一条连续的带。
3
The rooms, which run in a continuousband around the outer walls, are linked by a central corridor, and can be subdivided or joined with partitions.