By measuring and registering the difference in speed between the sonic waves that are travelling along with the wind and the ones which are travelling against it, we can very accurately determine the wind velocity.
(the sonic waves; are travelling; along with the wind and the ones) (the ones; are travelling; against it) (we; can very accurately determine; the wind velocity)
the sonic waves the ones we
are travelling are travelling can very accurately determine
along with the wind and the ones
against it
the wind velocity