磷光层吸收某些蓝色光线之后，就能被“启动”进入一种兴奋状态。

The phosphor absorbs some of the blue light and is "pumped" into an excited state.

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现有的白色二极管同样基于蓝色的光——源于这种颜色的光是用于激发一种由钇铝石榴石组成的磷光层。

Existing white LEDs are also based on blue ones, the light from which is used to excite a phosphor layer made of yttrium aluminium garnet (YAG).

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当所有的景物都沐浴在明暗相宜的色调中的时候，他的同伴的脸就成了他眼睛注意的中心，那张脸从层层雾霭中显露出来，脸上似乎染上了一层磷光。

Whilst all the landscape was in neutral shade his companion's face, which was the focus of his eyes, rising above the mist stratum, seemed to have a sort of phosphorescence upon it.

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