1. A field, domain, or area of activity that is firmly established, recognized, and stable; a recognized domain of expertise or influence
The entertainment industry operates in a well-established sphere with clear commercial rules.
A indústria do entretenimento opera em uma esfera bem estabelecida com regras comerciais claras.
2. A social, professional, or institutional area that has developed solid foundations and is widely accepted
Academic research is conducted within a well-established sphere of peer review and publication standards.
A pesquisa acadêmica é conduzida dentro de uma esfera bem estabelecida de revisão por pares e padrões de publicação.