Most blind people, even if they don't have any sight, are still able to perceive light.

大多数盲人，即使没有任何视力，也能够感知光。

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The horses were climbing up a hilly piece of road when she first caught sight of a light.

当她第一次看到灯光时，马正爬上一段山路。

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Because light traveling down from a summit passes through many such layers, a surveyor could sight a mirage rather than the peak itself.

因为从山顶向下传播的光会穿过许多这样的层，所以测量员看到的可能是海市蜃楼而不是山峰本身。

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The galactic centre can only be observed at certain wavelengths - such as X-rays - because large amounts of dust lie in our line of sight, blocking out optical light.

BBC: Arches Cluster, Leicester

Perot's eyes light up at the sight of yellow school buses in front of Houston's Museum of Natural Science.

WSJ: How Dallas Does Philanthropy: Perot Museum of Nature and Science

Medieval scholars were particularly fascinated by the science of optics and invented eye glasses partly as a result of their studies using lenses to determine the nature of light and the physics of sight.

FORBES: Connect