这些发光二极管可以模拟红光。
发光二极管发出了光，这种光被植物感知为红光。
较少红光和较多远红光的比例会引起植物的反应。
A ratio of less red and to more far-red light would cause a reaction from the plant.
山峰也开始发出红光了，海蒂突然对小男孩喊道：“哦，彼得，看！”
The peaks also started to glow, and Heidi suddenly called to the boy, "Oh, Peter, look!"
顶部的植物会吸收大部分的红光进行光合作用，但反射大部分的远红光。
The plant on top would absorb most of the red light for photosynthesis, but reflect most of the far-red light.
当小男孩的花绽放时，月亮发出柔和的红光。
When the little boy's flowers came out, the moon gave out a soft red light.
植物吸收大部分照射到它们的红光，但只吸收部分照射到它们的远红光。
Plants absorb most of the red light that hits them, but plants only absorb some of the far-red light that hits them.
一些生物学家假设，如果一株植物处在另一株植物的荫蔽下，它就会停止生长，当它感知到红光与远红光的不寻常比例时，反应就会触发。
Some biologists hypothesize that a plant will stop growing if it's in the shade of another plant, a reaction that's triggered when it senses an unusual ratio of red light to far-red light.
垂下头来，在红光闪耀的炉子旁
如果恒星远离你，所有线都会红光偏移。
And if the star moves away from you, all the lines will be red-shifted.
球根状白色的头在市区路灯上面散发着红光。
在一天的这个时候，你需要过滤掉红光才能把相照好。
At this time of day you need to filter out the red light to take a good photo.
与黑色岩石相比，这颗红宝石闪耀着美丽的红光。
蜘蛛星云的红光来自天文学家们所称的激发的氢气。
The Tarantula's ruddy glow comes from what astronomers call excited hydrogen gas.
大的将吸收的能量转成红光重新发射出去。
有些荧光灯也会出现同样的情况，红光也是同样的缺失。
The same is true of some kinds of fluorescent lighting, which are also deficient in red light.
这种紫光冲击并激发邻近的叶绿素分子，使它们发出红光。
That violet light strikes the nearby chlorophyll molecules, excites them, and the chlorophyll then produces the red light.
早期LED的液晶层是砷化镓或者磷化镓做的，所以发出红光。
The crystal layer on early LEDs was gallium arsenide or gallium phosphide, which lent that reddish color.
他在会议室的外面用红光和绿光来暗示秘书是否该让来访者进来。
Outside his boardroom he posted red and green lights to signal to his secretary whether visitors could enter.
打个比方，红色的物体只反射红光而吸收光谱中其他颜色的光线。
For instance, red colored objects reflect only red light and absorb the other colors of light in the rainbow spectrum.
然而，小肿瘤即使感染了使它们发红光的病毒，也很难让人看见。
Even when they are infected with viruses that make them glow red, though, small tumours are hard to see.
当暴露于波长约400纳米的光中，普通绿色叶绿素将发出红光。
When exposed to light with a wavelengths of about 400 nanometers the normally green colored chlorophyll glows red.
之后他就开始着手研制一种新型的可以发出可见红光的晶态半导体。
He then set out to make a new type of semiconductor crystal that would be able to emit visible, red light.
他们会依稀看到那里站着一个人，额上映着东方的红光，那会是谁呢？
Whom would they discern there, with the red eastern light upon his brow?
科罗拉多州博尔德市晚上发出的红光部分灯光被烟雾粒子散射的结果。
The reddish glow from the city lights of Boulder, Colo., is the result in part of the light being scattered by haze particles.
较大尺寸晶体发射长波光线(红光)，小晶体则发射短波光线(蓝光)。
Large ones emit long wavelengths (red light). Small ones emit shorter wavelengths (blue).
这种薄的纳米尺度的楔子形状吸收能力强，顶部吸收蓝光，底部吸收红光。
The thin, nanoscale wedges strongly absorb blue light at the tip and red light at the base.
一群强大的巨型恒星点燃蔷薇星云的中心，来自电离氢的红光使其绚丽夺目。
The center of the Rosette Nebula, which glows with the red light of ionized hyrdorgen, is fueled by a central cluster of powerful giant stars.
比如，通过红光或绿光表明系统状态，这会给红-绿色觉障碍者会带来麻烦。
For example, indicating a system status via virtual red and green lights, is a problem for people with red-green color deficiencies.
比如，通过红光或绿光表明系统状态，这会给红-绿色觉障碍者会带来麻烦。
For example, indicating a system status via virtual red and green lights, is a problem for people with red-green color deficiencies.
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