When you sit in the cars, the floor drops away.

The doors closed, the floor dropped under his feet and stopped again immediately.

And as the floor dropped open, a strange sight came into view.

He was in the shower when the floor dropped under him.

In front of them, across from the opening through which they had just entered, the floor dropped away into a pit.

Then the floor dropped, because there was nothing on it.

My spine filled with ice, and I felt as if the floor dropped 20 feet.

Together we swam out to where the sandy floor dropped to about 10 feet deep.

From it the floor of the place was dropping rapidly.

The floor had dropped beneath him, splitting in the center.