He was forced to crouch low because the ceiling at the rear of the antechamber sloped downward dramatically.

Its ceiling sloped and it held a narrow bed with a small table beside it; no space for anything else.

The ceiling sloped downwards at both sides with a straight piece in the centre.

The low ceiling sloped sharply to the left and the walls were bare, crumbling stone.

The room was barely ten paces long, and the ceiling sloped on one side.

The ground sloped upward, and the ceiling sloped downward.

He could discern a gradual widening in the tunnel: the ceiling sloped higher.

The "ceiling" of the conduit suddenly sloped downward again, and there was no more air to breathe on the top of the pipe.

The ceiling sloped downward as he went into a wide, low passage.

The ceiling sloped upward away from the couch to the view port, which appeared to be about six or seven meters high.