This fire escape is a 40 storey spiral staircase attached to the exterior of the building 무려 40층 짜리 화재 비상계단
건설과학 Construction,Science/환경안전 Environment,Safety2018. 3. 3. 01:50
This fire escape is a 40 storey spiral staircase attached to the exterior of the building
Edifício Copan
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