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| NOUN |
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| /ˈspektrəm/ |
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| 1 | the whole range of ideas, qualities, situations etc that are possible 系列；范围；幅度 |
| the parties at the centre of the political spectrum 处于政治活动核心的党派 |
| wide/broad spectrum (=a large range) The course covers a wide spectrum of musical activity from opera to rock. 广泛的范围 |
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| 2 | the complete range of colours into which light can be separated when it passes through a prism 光谱 |
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| 3 | science a range of radio waves or light waves 频谱 |
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