A gravitational lens is formed when light is bent by a massive object.
引力透镜现象就是光被巨大质量物体弯曲的现象。
We see shapes when light hits an object.
当光照射到一个物体时，我们可以看到物体形状。
When light is focused even more as a laser beam, it can cut through steel.
当光被集中成为雷射线时，连钢铁都能穿透切断。
When light comes, darkness goes away.
光来了，黑暗就逃跑了。
When light comes, darkness goes away.
光来了，黑暗就逃跑了。
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