The sky sunset, left in a hurry, yet more than light light smile, let her hurt again.
天边的夕阳，落得太匆忙，余光还未照亮微笑，就让她一再受伤。
If the charcoal does fail to light, use a special liquid spray and light it with a long taper.
如果木炭确实点不着，喷一种专用液体喷雾剂，再用一根长蜡烛把它点燃。
Spectroscopy is basically the study of spectra and spectral lines of light, and specifically for us, the light from stars.
光谱学基本上是一种研究光谱和光谱线的学科，特别对我们来说，是研究恒星发出的光。
Other species take into account the changing conditions of light by performing their visual displays only when the light is favorable.
其他物种只在光线适宜时才会展示它们的视觉形象，以此来考虑光的变化情况。
The third Speedlight SB-80DX acted as hair light. To get a softer light, I used Speedlight Pro Kit Softbox.
第三盏闪光灯SB-80DX充当发灯。为了获得更柔和的光线，我使用了热靴灯柔光箱套装。
We have to cancel all other light sources to see this very, very dim light from the atoms.
我们不得不遮蔽所有其他的光源，才能看到这个原子非常暗淡的光线。
At night, scan the horizon for artificial light sources, such as fires and streetlights, then walk toward the glow of light pollution.
夜间，仔细眺望地平线，寻找诸如火和路灯之类的人造光源，然后朝光污染造成的光亮走。
At night scan the horizon for artificial light sources such as fires and streetlights, then walk toward the glow of light pollution.
晚上，扫视地平线，寻找像火和街灯的人工光源，然后朝发光的光污染方向走。
This meant of course that Doris had to tell Bass whether it was a flashing light or whether it was a steady light.
当然，这意味着桃瑞丝必须告诉巴斯这是一盏闪烁的灯，还是一盏稳定的灯。
The light they saw in the sky might have been light from the ground, reflected on to the clouds.
他们在天空中看到的光可能是来自地面反射到云层上的光。
For cooler (blue or green) light, you'll tell the camera to warm things up, and in warm light, you'll tell it to cool down.
对于较冷的光源（蓝或绿色），你会让相机给照片增加暖色，而在暖光源下，你要让它给照片降温。
Certain plant species won't flower if they sense too much light and some plants will only flower if they sense a specific amount of light.
某些植物种类如果感觉到了太多光就不开花，而有些只有感觉到了一定程度的光才会开花。
When a plant absorbs light for performing photosynthesis, it only absorbs some wavelengths of light and reflects others.
当植物吸收光进行光合作用时，它只吸收某些波长的光，并反射其他波长的光。
I am sure you all know from physics class about how light moves in microscopic ways and that we can only see light when the wavelength of that light is in a specific range.
我相信，你们在物理课上都学过光是如何以微观的方式运动的，以及只有在光的波长在特定的范围内时我们才能看到光这一事实。
Light pollution is largely the result of bad lighting design, which allows artificial light to shine outward and upward into the sky.
光污染在很大程度是因为照明设计得不好，人造光可以向外和向上照射到天空。
If you could move at the speed of light, your time would stand still, if you could move faster than light, your time would move backward.
如果你能以光速运动，你的时间就会静止不动；如果你能以快于光速的速度运动，你的时间就会倒退。
If you buy them out somewhere you're going to get one that's maybe the size of a light bulb, but it's a huge light.
如果你在某个地方买了它们，你可能会买到一个灯泡那么大的灯，但它是非常大的灯。
These light-emitting diodes could simulate red light.
这些发光二极管可以模拟红光。
You don't need a light switch or a light bulb or an iPhone app to turn something on or off.
你不需要电灯开关、灯泡或苹果手机应用程序来打开或关闭某些东西。
It sounds paradoxical, because the idea behind this hypothesis is that the red pigment is made in autumn leaves to protect chlorophyll, the light-absorbing chemical, from too much light.
这听起来很矛盾，因为这一假设背后的理念是，树叶在秋天产生的红色素是用于保护叶绿素这种吸收光的化学物质，以免它吸收过多的光。
Whatever product you use should emit only visible light, because ultraviolet light damages the eyes.
不管你用什么产品，都应该只发出可见光，因为紫外线会伤害眼睛。
The lamp takes energy from a plant growing in a wooden box and uses it to light up an LED light bulb.
这种灯从生长在一个木箱里的植物中获取能量，然后用它来点亮一个LED灯泡。
The company reintroduced the eco-light with a new message, one that emphasized cost savings, that the eco-light lowers electric bills and lasts for years.
该公司重新推出了一个拥有新理念的环保灯，这一新理念强调节约成本，以及环保灯可以降低电费，并可以使用多年。
If the venue of your presentation is not adequately light-proof, select a dark-colored background and use any light color for text.
如果演示的地点不具备足够的防光性，请选择深色背景，并为文本使用任何浅色。
A candle does not produce as much light as a light bulb.
蜡烛产生的光亮不如灯泡强。
Research has found that the body will slow or stop it with light on, get away from any light, even the blue light from your charging smart phone.
研究发现，当灯亮着时，身体会放慢分泌荷尔蒙褪黑素的速度或停止分泌，要远离任何光源，甚至是正在充电的智能手机发出的蓝光。
The precise thickness at which the fibre traps the light depends on the wavelength of that light.
纤维捕捉光束的确切厚度取决于那条光束的波长。
The precise thickness at which the fibre traps the light depends on the wavelength of that light.
纤维捕捉光束的确切厚度取决于那条光束的波长。
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.
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.
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。
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