• 1. Shadows from Light: 灯下阴影

• 1.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。
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• 2.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。
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• 3.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。
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