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spectrum

noun
 
🔊/ˈspektrəm/
🔊/ˈspektrəm/
(plural spectra
🔊/ˈspektrə/
🔊/ˈspektrə/
)
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  1.  
    a band of coloured lights in order of their wavelengths, as seen in a rainbow and into which light may be separated谱；光谱
    • A spectrum is formed by a ray of light passing through a prism.一束光通过棱镜就会形成光谱。🔊🔊
    • Red and violet are at opposite ends of the spectrum.红色和紫色位于光谱的两端。🔊🔊
    Extra Examples
    • Other species can perceive colours of the spectrum that are invisible to us.其它物种能够感知光谱中我们看不到的颜色。
    • These wavelengths correspond to red in the visible spectrum.这些波长相当于可见光谱中的红光。
    • a continuous spectrum of light waves光波的连续谱
    • the ultraviolet part of the spectrum光谱的紫外线部份
    Oxford Collocations Dictionaryadjective
    • visible
    • colour/​color
    • electromagnetic
    • …
    phrases
    • the colours/​colors of the spectrum
    • the… end of the spectrum
    • the… part of the spectrum
    • …
    See full entry
  2.  
    a range of sound waves or several other types of wave声谱；波谱；频谱
    • the electromagnetic/radio/sound spectrum电磁波谱；射频频谱；声谱
    Topics Physics and chemistryc1
  3.  
    [usually singular] a complete or wide range of related qualities, ideas, etc.范围；各层次；系列；幅度
    • a broad spectrum of interests广泛的兴趣范围
    • We shall hear views from across the political spectrum.我们要听取各个政治派别的看法。🔊🔊
    Extra Examples
    • The policy has the support of a broad spectrum of opinion.该政策得到广泛的舆论支持。
    • a wide spectrum of interests广泛的兴趣
    • These thinkers represent a wide spectrum of political perspectives.这些思想家所代表的政治观点千差万别，范围很广。
    • There was consensus across the political spectrum.政坛各界人士达成了共识。
    • The two speakers were chosen to represent opposite ends of the spectrum.选出的两个发言人分别代表对立的两极。
    • The newspaper covers a broad spectrum of opinion.这份报纸报道各种观点。
    • The courses cover the full spectrum of levels.这些课程从初级到高级，各个水平都有。
    Oxford Collocations Dictionaryadjective
    • complete
    • full
    • broad
    • …
    verb + spectrum
    • cover
    • span
    • represent
    • …
    preposition
    • across the spectrum
    • spectrum of
    phrases
    • at one end of the spectrum
    • at the other end of the spectrum
    • both ends of the spectrum
    • …
    See full entry
    4. Word Originearly 17th cent. (in the sense ‘spectre’): from Latin, literally ‘image, apparition’, from specere ‘to look’.