| 单词 | lumen |
| 释义 | lumen (once / 14241 pages) 1n 2n The lumen is a unit of measurement for the brightness of light. If a light bulb is blindingly bright, it produces a lot of lumens. The lumen is a basic unit for measuring brightness, just as the gram is a basic unit for measuring mass. A typical light bulb in your home might produce about 1000 lumens. Lumen is related to the word luminous, which means “bright” or “radiant.” WORD FAMILYlumen: lumens, lumina USAGE EXAMPLESHe had already been selling his products through his online store and about 180 retailers worldwide, including major online players like Lumens. New York Times(Nov 10, 2016) And the Marimba Lumina, played with mallets, responded to velocity, position and contact; each of its four mallets could be assigned its own sound. New York Times(Sep 17, 2016) While the LB120 is also rated at 800 lumens, it does allow you to adjust the color temperature between warm and cool as you please. The Verge(Sep 13, 2016) 1 n a cavity or passage in a tubular organ 2the lumen of the intestine Hyper bodily cavity, cavity, cavum (anatomy) a natural hollow or sinus within the body n a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions Syn|Hyper lm luminous flux unit a measure of luminous flux per unit area |
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