名词
中文翻译：发光体
同义词：
['luminous', 'luminescent']
例句：
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1.The lumogen in the lamp is what gives it its brightness.
灯中的发光体是它发光的原因。
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2. Lumogens are responsible for the colors of the rainbow.
发光体负责彩虹的颜色。
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3. The lumogen in a star is what makes it shine so brightly.
星星中的发光体让它们如此明亮地发光。