1·In the past people didn't know that light travels faster than sound.
过去人们不知道光比声音传播得快。
2·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。
3·Light travels faster than sound.
光比声音传播得快。
4·Light travels in straight lines.
光是沿直线传播。
5·Light travels faster than sound.
光速比声速快。
6·Light travels most quickly.
光传播得最快。
7·Can you tell me how fast light travels?
你能告诉我光速有多快吗？
8·Light travels fast.
光速非常快。
9·Father said that light travels much faster than sound.
父亲说光比声音传播快得多。
10·He said that light travels much faster than sound.
他说光比声音传播得快。