Don't leave objects like books, papers, shoes or blankets on the floor.
In addition to the stairway safety measures discussed earlier, never leave objects on the steps or the landings.
So they're programmed to leave large objects alone.
When people litter, for example, they sometimes leave behind objects that are 25 feet long and weigh 1,500 to 2,500 pounds.
A few of us leave behind objects judged, at least temporarily, worthy of preservation by the culture into which we were born.
Not just aircraft leaving the atmosphere, but smaller objects.
Continental asks that customers leave behind sharp objects, including high-heeled shoes.
His captors, after searching him, had left him objects which seemed unimportant.
His prey must have dropped them unknowingly, for certainly no one would deliberately leave such objects behind.
In some cases, the ghosts may leave behind important objects.