但是，只有在光线的照射下才会发光。
在手电筒的光线的照射下，所有东西都没了声色。
不过在临近恒星发出的红外波长光线的照射下，让它的气体和尘埃呈现出美丽的紫、绿和蓝色。
But at infrared wavelengths bright light from nearby stars lights gas and dust up with beautiful purples, greens, and blues.
由于火山喷发，细小的粉尘颗粒阻挡了自然光线的照射，而蕨类植物却可以在光线昏暗的条件下自由生长。
Ferns can grow in dim lighting conditions, which can be caused when particles churned out by volcanoes block out natural light.
美术馆各层的比例和其内太阳光线的照射情况将呈现出各种变化，中心和外围间的不同空间关系使这一变化更加清晰可见。
For each floor the proportions and the daylight conditions will show variation, emphasized by the differing spatial relations between the core and the envelope.
在被称为曙暮辉的太阳光线的照射下，它们实际上是由靠近遥远的西方地平线的云层产生的阴影，此时落日在云层的正后方渐渐隐去。
Outlined by rays of sunlight known as crepuscular rays, they are actually shadows cast by clouds near the distant western horizon, the setting sun having disappeared from direct view behind them.
在头顶上，光线照射出支撑屋顶的旧木头。
Overhead, the lights showed the old timbers, used to brace the roof.
太阳光线照射到地球时，大量的热被反射回太空。
When the sun's rays hit the earth, a lot of the heat is reflected back into space.
光线透过窗帘上的一个孔照射进来。
一束束光线透过树丛照射下来，在地面上形成了大小不一的斑点。
Rays of light filtered through the trees, forming spots of varying sizes on the ground.
我觉得那些让光线照射透过的缝隙更有趣些。
I'm more interested in the cracks that let the light shine through.
如果一个人在户外，即使背景是明亮的阳光，正面也会有来自天空的光线照射。
Someone standing outside with her back to bright sunlight will have light falling on her from the open sky in front of her.
他们把树上的叶子清理好，让光线照射进来，然后在树的躯干旁种植，以此掩人耳目，逃避打击毒品部门的侦查。
They clear foliage from the trees to allow in light, then grow the plants between the trunks to hide them from aerial detection by the drug authorities.
我能感觉到光线照射到脸上，能听到风吹树叶的声音，能闻到空气中花儿的芬芳，然后我按下快门。
I can feel the light on my face, hear the wind in the leaves, smell the fragrance of the flowers - then I just press the shutter.
当前的计算机模型预测：近距离围绕恒星运行的炽热的木星类行星(巨大的气体球)只能像水星一样暗，后者能反射照射到它上面的大约10%的太阳光线。
Current computer models predict that hot-Jupiter planets-gas giants that orbit very close to their stars-could be only as dark as Mercury, which reflects about 10 percent of the sunlight that hits it.
然而，如果采用激光对物体表面进行照射，那么光线反射回来的方式能用来收集具有相同特征物体的信息。
However, if you shine a laser at the surface of an object, the way the light is reflected back can be used to gather information about the same features.
它的表面环绕了一层薄木板保持表面光滑，能够使它滚动起来，在侧面开口以及预订窗户能够让外部的光线照射进来。
Thin wooden slats circle the unit to provide a smooth running surface to roll it and openings on the side and slated Windows let light into the interior.
这种治疗在早上你还睡觉的时候照射微弱的光线，然后光线慢慢变强，就像日出一样。
For this treatment, a dim light goes on in the morning while you sleep, and it gets brighter over time, like a sunrise.
一个典型的摄像机以记录光照射的焦平面上的方式工作——通过镜头被捕获的光线区域。
A typical camera works by recording where light strikes the focal plane-the area onto which rays passing through a lens are captured.
而另一类哺乳类海洋掠食物种——海豚——则是使用声音去“察看”那些几乎没有光线照射到的地方。
Those other mammalian Marine predators, the dolphins, use sound to "see" in places where little light penetrates.
当阳光从卫星拍照的角度照射到水面上时，平滑的水面像镜面一样反射光线，而不平的水面则会散射光线，看上去是黑暗的。
When sunlight hits water at the same Angle as a satellite's view, smooth areas reflect light like mirrored surfaces while rough regions scatter light and appear darker.
安装在住宅屋顶的太阳能光伏系统则与其相反，它让光线直接照射半导体材料以产生动力。
By contrast, photovoltaic solar power systems, mostly used on home rooftops, let light interact directly with semiconductor materials to generate power.
用激光照射氢原子或反氢原子，观察何种波长的光线被吸收了，可以通过这种办法来详细地比较这两种原子的能级。
By shining laser light onto hydrogen or antihydrogen and observing which wavelengths are absorbed, the energy levels of the two can be compared in detail.
为了消除这种效果，可以在闪光灯灯头上加一片不透明材料或黑色塑料泡沫板做的遮光片，以阻挡扩散的光线照射到被摄体。
To eliminate this effect, you can place a small piece of opaque material or black foam just long enough to block the direct part of the light from hitting your subject.
如果你把水藻种在池塘里，但是却不能以正确的角度用光线照射它们，那么如果水藻生长太过密集时，可能会相互遮挡。
If you keep your algae in ponds the rays do not always strike them at the best Angle and the algae sometimes shade one another if they are growing densely.
但是，当我路过商店反光的橱窗，光线照射到我的脸颊，当有人给我照相的时候，我仍然会努力吸气，使我的脸看起来更瘦。
But I still catch myself sucking in my gut when I walk past reflective store Windows or biting the insides of my cheeks when someone takes my picture so my face looks thinner.
虽然阳光呈直线照射，但光线在球型天空的投影却是巨大的圆形。
Now although sunlight indeed travels along straight lines, the projections of these lines onto the spherical sky are great circles.
虽然阳光呈直线照射，但光线在球型天空的投影却是巨大的圆形。
Now although sunlight indeed travels along straight lines, the projections of these lines onto the spherical sky are great circles.
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