Think of something as seemingly benign as the cellphone: we have microfinance and text-based social networking at one end of the spectrum, and improvised explosive devices at the other.
2019年6月六级真题（第三套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
N-SING
光谱
The spectrum is the range of different colours which is produced when light passes through a glass prism or through a drop of water. A rainbow shows the colours in the spectrum.
N-COUNT
系列;范围
A spectrum is a range of a particular type of thing.