要把光被捕获在两维的曲线状表面上时，要求物体表面非常平滑，才足以把大部分光线干净利落地反射进油层而不是分散在所有的各个角度上。

For the light to be trapped in two dimensions, the object's surface needed to be smooth enough to cleanly reflect most of the light into the oil layer rather than scattering it at all angles.

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以数字和线状图表标示远离可见光谱的光线波长，只有经过专业训练的光谱学家才能看懂这些数据，并发掘出隐藏在数据背后的故事。

Numbers and line graphs denoting wavelengths of light far outside the visual spectrum. Only a trained spectroscopist could look at that data and see the larger story it tells.

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它的颜色在一个下午引起了我的注意，但是光线状况却不佳。

The colors caught my eye late one afternoon, but the light was not good.

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