GbEng
东边地平线上的一道淡红光线使我知道天快要亮了。 A line of pink on the eastern horizon told me that daybreak was near.
摄影用超压强烈溢光灯，照相泛光灯用于摄影照明的、可产生持续明亮光线的可再次使用的电灯 A reusable electric lamp that produces a bright continuous light for photographic illumination.
别在光线不好的地方看书。 Don't read in poor light.
光线太暗，我看书有困难。 The light was too dim for me to read easily.
你在这样弱的光线下看书会损伤视力的。 You will strain your eyes by reading in such poor light.
中间色，半调色在光线最强处与黑色暗影之间的一种色调或明暗的配合 A tone or value halfway between a highlight and a dark shadow.
当一束光线穿进暗淡的房间时，我们可以看到空气中有许多小颗粒在飞舞。 We can see many molecules flying in the air when a sunbeam penetrated the dark room.
树叶使光线漫射。 The light was diffused by the leaves.
发射以光线或波的形式发出和传播能量 Emission and propagation of energy in the form of rays or waves.
棱镜可以分解光线。 A prism decomposes light.
光线暗淡有助於人们松弛精神. Subtle lighting helps people relax.
适应气候动物或植物在生理上对气候或环境的变化，比如光线，气温或高度变化的适应 The physiological adaptation of an animal or a plant to changes in climate or environment, such as light, temperature, or altitude.
光度视网膜亮度单位，相当于每平方米有一烛光亮度的表面，通过一平方毫米的瞳孔区域，到达视网膜的光线数量 A unit of retinal illumination, equal to the amount of light that reaches the retina through 1 square millimeter of pupil area from a surface having a brightness of 1 candela per square meter.
恐光症，光恐怖对光线不正常或不合情理的畏惧 An abnormal or irrational fear of light.
昼盲（症）一种视觉缺陷，其特点是在明亮的光线中和在阴暗的光线里一样无法看清东西 A visual defect characterized by the inability to see as clearly in bright light as in dim light.