spectrum
US /ˈspek.trəm/
UK /ˈspek.trəm/
1.
光谱
a band of colors, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction according to wavelength.
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The prism separated the white light into a beautiful spectrum of colors.
棱镜将白光分解成美丽的彩色光谱。
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The visible light spectrum ranges from red to violet.
可见光光谱范围从红色到紫色。