名词
中文翻译：亮度
同义词：
['brightness', 'intensity', 'illuminance']
例句：
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1.The sun's luminosity is measured in lumens.
太阳的亮度以流明为单位测量。
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2.The new LED light bulb has a much higher luminosity than the old one.
新型LED灯泡的亮度远高于旧型。
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3.The scientist used a special device to measure the luminosity of the star.
科学家使用了一种特殊设备来测量这颗星的亮度。