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In both cases, the source of light is the same: the Sun.

在这两种情况下，光的来源都是太阳。

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Love is the source of knowledge as fire is the source of light.

爱情是知识的泉源，就像火是光的源泉一样。

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Intensity, if we increase the intensity, we're not increasing the energy in each photon, we're just increasing the number of photons that we're shooting out of our laser, whatever our light source is.

强度，如果我们增加强度，我们增加的不是,每个光子的能量，我们增加的仅仅是,从我们激光源射出的光子数，无论我们的光源是什么。

麻省理工公开课 - 化学原理课程节选

Of the nine patients included in the trial, 8 out of the 9 were able to perceive light, and 7 out of 9 were able to definitely find the source of that light. 6 out of 9 had a significant portion of their vision restored, with some patients able to read letters out of books and also distinguish facial features.

FORBES: Second Test Of Retinal Implant Shows Restored Vision To The Blind

One recent evening, almost the only source of light in the town's commercial district was Harry's Lobster House, which has been serving lobster bisque since 1933.

WSJ: Battle of the Beach

Software is altering the way lights are used every day, just as LEDs are changing the source of that light.

FORBES: The Next Bright Idea: Software For Lighting