The lid (3) is attached to the retaining perimeter wall such that removal of the lid from the package causes detachment of the perimeter wall from the base.
The perimeter wall has been thickened to incorporate quiet reading nooks and intimate social spaces.
With a tingle of horror, Harry saw in the distance a huge, batlike shape flying through the darkness toward the perimeter wall.
The spectacular towers and gates, which lie within the perimeter walls, are almost never out of sight — all bathed in an atmospheric golden light.
The safety defending supervisory system mostly detects perimeter walls passageways and primary passages important material depots finance balance center and defending supervisory center.
