——is known to us all that sound travels more slowly than lig
——is known to us all that sound travels more slowly than lig
As is known to us all,light travels much faster than sound.
What is known to us that the light travels faster than sound
sound travels more slowly than
____is well-known is ____light travels faster than sound.
___is known to us all is that the earth is smaller than the
it _to all that light travels faster than sound A
——is known to us all is that reading may relax our body.
My Paul said to us,'Light travels faster than sound.'
Mr.Wang said to us,"Light travels faster than sound."
英语:That light travels in straight lines is known to all.
It is known to all that light travels in straight lines.