The feat is not just a parlour trick—it could help people visualise how light travels in the curved fabric of space.
这一壮举不仅仅是客厅里的把戏——它可以帮助人们想象光是如何在弯曲的空间结构中传播的。
Lesson Three How Light Travels.
光是怎样传播的？
The experiments help visualise how light travels in space warped by gravity.
实验有助于形象化地显示光在被引力所弯曲空间内的传播情况。
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