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luminosity of sth
The luminosity of the star is immense.
这颗恒星的光度极大。
发光度；光明；光辉
先理解核心含义，再看它在真实句子里的用法。
发光度；光明；光辉
the quality of being luminous; emitting or reflecting light
The luminosity of the star is immense.
这颗恒星的光度极大。
发光的性质或发光体；光辉或灿烂。
the state of being luminous, or a luminous object; brilliance or radiance
发光的特性；发出或反射光
the quality of being luminous; emitting or reflecting light
同一波长下光通量与辐射通量之比；即亮度因子。
the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor
恒星向四周辐射能量的速率。
The rate at which a star radiates energy in all directions.
The luminosity of the star was measured by astronomers.
天文学家测量了这颗恒星的亮度。
AI contextual example
This lamp has adjustable luminosity for different moods.
这盏灯具有可调节的亮度，适合不同氛围。
AI contextual example
The painting's luminosity comes from the artist's use of light colors.
这幅画的光辉来自艺术家对浅色调的运用。
AI contextual example
its luminosity is measured relative to that of our sun
它的亮度是相对于我们太阳的亮度来测量的。
WordNet
The luminosity of the star is immense.
这颗恒星的光度极大。
Astronomers measure the luminosity of galaxies.
天文学家测量星系的光度。
This lamp has a high luminosity.
这盏灯亮度很高。
Not this
The luminosity of this star is very bright.
Use this
The luminosity of this star is very high.
形容词bright通常用于描述光源本身（如a bright star），而描述光度（luminosity）时应用high或low。
Not this
There are many luminocities in the night sky.
Use this
There are many luminous objects in the night sky.
拼写错误：luminosity的拼写是l-u-m-i-n-o-s-i-t-y，而非luminocity。且luminosity作为不可数名词，一般不用于复数形式指代发光体。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
高亮度；高光度
The high luminosity of the LED makes it suitable for outdoor displays.
这种LED的高亮度使其适用于户外显示屏。
低光度；低亮度
Astronomers use special instruments to detect stars with very low luminosity.
天文学家使用特殊仪器探测光度非常低的恒星。
太阳光度
The solar luminosity is the total energy the Sun radiates per second.
太阳光度是太阳每秒辐射的总能量。
恒星光度
Stellar luminosity depends mainly on the star's mass and temperature.
恒星光度主要取决于恒星的质量和温度。
光度级
The star was classified as a supergiant by its luminosity class.
这颗恒星依据其光度级被归类为超巨星。
光度距离
The luminosity distance can be derived from the apparent brightness of a standard candle.
光度距离可由标准烛光的视亮度推导得出。
Use luminosity naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把开头的lumin想成光的单位“流明”（lumen），流明越多越亮，luminosity就是发光度、光度。
语域：formal 常见场景：天文学、物理学、书面描写 luminosity 属于较正式的用词，多用于科技（尤其天文学、物理学）或书面描写中；在日常口语中较少出现，普通对话更常用 brightness 等词。
通常不可数，可数时表示不同类型或实例
Dictionary facts from ECDICT, WIKTIONARY.