This light is passed through a prism, which breaks it up into a spectrum.

这种光通过棱镜，而棱镜把它分割成了一道光谱。

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Visible light consists of different colors or wavelengths, which together make up what's called spectrum, a band of colors, like you see in a rainbow.

可见光由不同的颜色或波长组成，它们共同组成了所谓的光谱（一段颜色），就像你在彩虹中看到的那样。

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This light is passed through a prism, which breaks it up into a spectrum, and a unique pattern, kind of like a chemical fingerprint of spectral lines for that element appears.

铁块会一直加热，直到到达某一燃点，便会辐射出光来；而当它的光线穿过一块棱柱时，棱柱就会分割光线，形成光谱。

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The MRI takes pictures in the visible light spectrum and provides back-up for the HRI.

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The city would give incentives to developers to clean up the kind of sites that fell in the light to mid-range of the pollution spectrum and thus languished in state and federal clean-up programs for their lack of severity: if developers complied with environmental guidelines and submitted to oversight, they would be spared the specter of future liability.

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Simply put, this means choosing lights that shine down, not up, and that emit light only in those parts of the spectrum that the human eye can perceive.

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