实际上，如果你将那束光聚集成射线光，它可以切断钢铁。

In fact, if you focus that light even more as a laser beam, it can actually cut through steel.

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某个人喊了一声，不同的光聚集到一起，就像火把回到它们的源头。

Someone shouted, and the disparate lights gathered like sparks of a fire returning to their source.

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如果你曾经用一个放大镜来聚集阳光去烧一只不幸的蚂蚁，你就知道太阳能光伏发电的要领了。

If you've ever used a magnifying glass to focus the sun's light and burn an unfortunate ant, you've got the gist of it.

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