closed stair การใช้

• Also on the east wall, a five-panel door opens into the closed stair along the east wall.
• The northbound one also has two closed stairs while the southbound has four, two on both the local and express sides.
• I notice that when the fan is on, it pulls a lot of air through the closed stair cover into the attic.
• Fordham Road is the largest station on the Concourse Line in terms of space, as it contains numerous closed stairs and passageways.