| 词汇 | lumen |
| 释义 | lumen noun [ C ] specialized uk/ˈluː.mən/ us/ˈluː.mən/ (UNIT OF LIGHT) physics (abbreviation lm)（光的单位）流明 a unit for measuring the amount of light something produces a light bulb rated at 750 lumens 一只750流明的电灯泡 (IN BODY) medical plural lumina or lumens（身体内的）腔 the inside space of a tube-shaped organ in the body, for example a blood vessel or intestine intestinal/vascular lumen 肠道／血管管腔 |
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