That's because the ambient light (in this case the blue sky) gets bounced of pretty much everywhere specially the Shadows.
那是因为环境光(蓝色的天光)被更多的反弹，尤其在阴影的部分。
In this tale, people who dwelt in the cave could know only the shadows of forms that were cast on the wall of the cave from the light outside.
在这个故事中，那些曾经在洞穴中居住的人们只能了解被光线所投射到洞穴墙上的自己的影子。
Scientists are trying to use them to bend light around objects so they don't create reflections or shadows.
科学家正在尝试使用他们来弯曲物体周围的光线，从而使这些物体不产生反射或者阴影。
White and gray reflecting CARDS helped intensify shadows that added dimension and underscored the direction of the light.
白色和灰色的补光板帮助增加阴影的密度，强化了阴影并突出了光线的方向。
The light arrives at a low angle, however, as the Sun makes a daily circuit around the horizon, and icebergs cast long shadows over the surrounding sea ice.
然而，当太阳每天沿着着地平线转动时，阳光只能以很低的角度到达南极大陆，将这里的冰山制造出长长的影子，投射在周围的海冰之上。
They exposed the creatures to a beam of directed blue light, as might come from certain bioluminescent predators, as well as to other stimuli such as passing shadows.
他们揭露了生物的蓝色光束，可能来源于某个会发光的食肉动物也可能是受到其他的刺激，如通过的阴影。
As the full moon diminishes, there is less and less light, allowing lions as well as other maneating animals to surprise and attack their prey successfully from the shadows.
因为满月之后光线越来越暗，使得狮子以及其他食人动物受益于阴影而获得成功攻击猎物的惊喜。
They all opened on a tolerably vast hall, paved with large flagstones, cut up by arcades and pillars, where only a tiny light and great shadows were visible.
这些窗子都通到一间相当大的厅堂，地上铺了宽石板，厅中间有石柱，顶上有穹窿，一点点微光和大片的阴影相互间隔。
Shadows are most of the time a darker version of the ambient light because the ambient light gets reflected/bounced of pretty much everywhere and thus mixes with the actual color of the object.
阴影的颜色一般是比环境光更暗一些的颜色，因为环境光被不断的反射、反弹因而和物体实际的颜色相混合了。
He made a hole and peering through, could see jewellery, and other objects stacked in piles in the shadows that extended beyond the beam of light penetrating the interior.
他掏了个洞往里瞥去，能看见珠宝，在透进去的光线之外的阴影里面，还有些堆成堆的其他东西。
This is because, with a broad source, light rays hit your subject from more directions, which tends to fill in shadows and give more even illumination to the scene.
这是因为光源越广，射在物体上光线的方向就越多，这会起到增加场景中的照明、减少阴影的作用。
A broad light source lessens shadows, reduces contrast, suppresses texture. A narrow light source does the opposite.
广泛的光源能够弱化阴影、降低对比、抑制纹理，较窄的光源则作用相反。
We inadvertently cast our own light on the shadow, and likewise, the light that created this shadow casts its light on ours. Suddenly, both shadows begin to disappear.
当不经意的让自己的光照在这阴影上时，阴影不见了，光更加明亮迷人。
Light and shadows: feathering gradients in photoshop.
光照与阴影：Photoshop中的高级渐变。
Look at the shadows, identify where the light is coming from. Become aware of light and its magic.
通过阴影来判断光是从哪里来的。
The shadows were naturally no longer as dark so I wanted to create a more ambient light “feel” to the photos.
所以我现在想拍一张更能体现环境光的照片。
When light hits you from above, it creates shadows on your face, particularly under the eyes.
当光线从上方往下照时，会在脸上投下阴影，特别是在眼睛下方。
If your model has big ears, then turn their head so only one is showing and then feather the light so that the other ear will fall into shadows and not be noticeable.
如果拍摄对象耳朵很大，就让他们稍微侧转一下头，这样就只有一个耳朵拍出来了，然后柔化光源，另一个耳朵就消失在阴影中，就不会被注意到。
If you don't have any shadows, you're not standing in the light.
如果你身旁没有阴影，那说明你压根不在阳光下。
Ozcan USES an LED as his light source, creating cellular shadows.
欧兹坎用LED(发光二极管)作为光源，以此制造细胞的阴影。
The figures of the apostles are pushed to the side, angles inhabit the margins and a burst of light creates severe shadows.
教徒人物被推到一边，多角度布满画的空白和发出的光线创造了阴影。
Highlights can help balance shadows and should be used on the edges of objects closest to the light source.
高光能平衡阴影，应该位于物体靠近光源的边缘。
Radiant faces, white foreheads, innocent eyes, full of merry light, all sorts of auroras, were scattered about amid these shadows.
无数光艳的面容、白皙的头额、晶莹巧笑的眼睛和种种曙光晓色都在那阴惨的园里缤纷飞舞。
The light source will most likely determine where the highlights and shadows fall (although with Web design you can afford to bend these rules in places).
光源位置决定了高光和阴影的位置（不过在网页设计中你能打破这些规则）。
Finally, in Forward rendering path, only the brightest directional light can cast shadows.
最后，在正向渲染路径，只有最亮的平行光可以投射阴影。
Next, learn how to set up fake radiosity bounce lights, use gradients to enhance shadows, shadow lights, and control light intensity, falloff and effect.
接下来，了解如何设置假辐射度反弹灯，使用梯度，以提高阴影，阴影灯光和控制光照强度，衰减和效果。
Next, learn how to set up fake radiosity bounce lights, use gradients to enhance shadows, shadow lights, and control light intensity, falloff and effect.
接下来，了解如何设置假辐射度反弹灯，使用梯度，以提高阴影，阴影灯光和控制光照强度，衰减和效果。
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