He would need some idea of how these things were built up in order to blow them down.

They must have blown down in the last few weeks.

During that day, a number of the trees blew down.

The sign must have been blown down by the wind.

It was blown down a few months before we were there.

Although in fact the tree is believed to have been only 450 years old when it blew down.

He turned his back to the wind that was blowing down from the mountain.

The first house they built blew down in a hurricane.

The impact blew down what was left of the front ceiling.

But local officials across the region said that too often the trees end up blowing down the beach or into the water.

Whatever they knocked down would not get up again soon.

The wall was then knocked down at the end of the show.

A few were in the process of being knocked down.

Then he knocked down the house and put up three more in its place.

And when you knocked him down, he always got up.

I tried to stop him, but he just knocked me down.

I was knocked down by a car and very nearly died.

I knew it before they had even knocked me down.

We can knock down the first one or the last two.

He is knocked down by a car while running around in fear.