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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But during an eclipse, the source of light is blocked and the moon's disk goes unusually dark.

但在整个月食过程中，光源被挡住，月亮的盘面通常是暗的。

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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.

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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

Her boyfriend would be fiddling at his computer, the only source of light in his shabby duplex, likely stoned, busy in the virtual world where he was most comfortable.

NEWYORKER: Shauntrelle