qián guāng ㄑㄧㄢˊ ㄍㄨㄤ 前光 谓祖先的功德。 晋 陆机 《述先赋》：“应远期於已旷，昭前光於未戢。” 唐 韩愈 《清河郡公房公墓碣铭》：“公胚胎前光，生长食息，不离典训之内。”
想想对冲基金的出现，20或25年前，对冲基金是雷达屏幕上的一个光点。
Think about the advent of hedge funds, twenty or twenty-five years ago, hedge funds were a blip on the radar screen.
它不记录直接反射回来的光线，而是记录下在进入相机前被反射过多次的光。
Some of this light would then travel back to the door and be reflected into the camera.That much is basic optics.
它不记录直接反射回来的光线，而是记录下在进入相机前被反射过多次的光。
Some of this light would then travel back to the door and be reflected into the camera. That much is basic optics.
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