老师告诉他们，由于光传播得比声音快，所以闪电好像发生在雷声之前。

The teacher told them since light travels faster than sound, lightning appears to go before thunder.

youdao

我就是从那里了解了光比声音传播速度快的，因为声音总是和飞石差不多一样的速度。

That's where I learned that light travels faster than sound, which is almost as slow as a flying rock.

youdao

我就是从那里了解了光比声音传播速度快的，因为声音总是和飞石差不多一样的速度。

That's where I learned that light travels faster than sound, which is almost as slow as a flying rock.

youdao