anel externo
1. the outer circular or ring-shaped part of something, typically the farthest from the center
The outer ring of the city has experienced rapid development in recent years.
O anel externo da cidade experimentou desenvolvimento rápido nos últimos anos.
2. in mechanical contexts, the exterior circular component of a bearing or rotational device
The outer ring of the bearing was damaged and needed replacement.
O anel externo do rolamento foi danificado e precisava ser substituído.
3. a peripheral or outer zone in an urban area, typically less developed than the center
Many suburbs are located in the outer ring of metropolitan areas.
Muitos subúrbios estão localizados no anel externo de áreas metropolitanas.
In Brazilian urban planning, 'outer ring' or 'anel externo' is commonly used in discussions about metropolitan expansion and city infrastructure. The term reflects urbanization patterns where outer rings often represent less developed or rapidly developing suburban areas, contrasting with central business districts.
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