A series of stone slabs lined the center of the room, all but one empty.

All at once the other Satoh turned like one person, looking toward the empty center of the room.

The main wheel is located near the glider's empty centre of gravity.

And, to Louise's engineer's eye, with its empty center the system had something of an unfinished, provisional look.

Alvar sat, facing the empty center of the room.

First they apply a sticky wax paste through the empty center of the disc.

Humans would live on two vast regions that face each other and that are connected through the empty center.

"Don't need it," he said and moved at a graceful lope into the empty center of the square.

He gestured toward the empty center of the room.

You become the empty center of all those references.