Lumen

(noun.) a cavity or passage in a tubular organ; 'the lumen of the intestine'.

(noun.) 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.

整理:维维安

• They fancy some foul, obscure den, some horrible _Tartarus informis, ingens, cui lumen ademptum. 哈丽叶特·比切·斯托. 汤姆叔叔的小屋.

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