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。
Father said that light travels much faster than sound.
父亲说光比声音传播快得多。
Father said, "Light travels much faster than sound."
父亲说，“光比声音传播快得多。”
Light travels faster than sound at the speed of 300,000 kilometres per second.
光速比声速要快，为每秒钟30万公里。
Our teacher told us that light travels faster than sound.
我们的老师告诉我们光比声音传播得快。
Our teacher told us light travels much faster than sound.
老师告诉我们光传播的速度比声音快得多。
Light travels faster than sound. That's why most people seem bright until you hear them speak.
光比声音快。这就是大部分人在说话之前看起来都很聪明的原因。
Light travels faster than sound.
光比声音传播得快。
Since Light travels faster than Sound, people appear brighter before you hear them speak.
由于光比声音速度快，人们总是在你听他们高谈阔论之前显得很聪明。
光的传播速度比声音快。
The teacher said that light travels faster than sound.
老师说光比声音传播速度快。
Our teacher told us that the speed of light is faster than that of sound.
我们的老师昨天告诉我们，光速是比声速快的。
As is well known, light travels faster than sound.
众所周知，光比声音传播快。
Our physics teacher told us that light travels faster than sound.
物理老师告诉我们光的速度比声的速度快。
Light travels faster than sound. That's why some people appear bright until you hear them speak.
光速快于音速。这就是为什么你在听到他人的发言后才会意识到他们的存在。
To my knowledge, light always travels faster than that sound does.
依我的知识来看，光的速度要比声音的速度要快。
Light travels are faster than sound.
光速比声速快。
We all know that light travels much faster than sound.
大家知道光比声音传播得快得多。
Light travels faster than sound, as is known to all.
光传播得比声音快，这一点大伙都知道。
He said that light travels much faster than sound.
他说光传播比声音传播快得多。
Light travels faster than sound.
光比声传播速度快。
Father said, Light travels much faster than sound.
父亲说，光比声音传播快得多。
In a thunderstorm you see the lightning first and then hear the thunder. This is because light travels very much faster than sound.
打雷时你先看到闪电，然后再听到雷声，这是因为光传播速度要比声音快。
As we know, the light travels faster than the sound.
像我们所知道的那样，光传播的速度比声音传播的速度快。
Light travels much faster than sound.
光速比声速快得多。
I had known that light travels faster than sound gradually when I was young.
当我小的时候我渐渐地知道光速比声速快。
Light travels faster than sound.
光速比声速快。
He said that light travels much faster than sound.
他说光比声音传播得快。
He said that light travels much faster than sound.
他说光比声音传播得快。
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