/ˈbraʊn.fiːld/ – adj
Definition: đã từng được tác động, đầu tư, hay xây dựng (đầu tư, lĩnh vực)
A more thorough explanation: A brownfield is a property, typically abandoned or underutilized, where there may be real or perceived environmental contamination that hinders its potential for redevelopment or reuse.
Example: The city council approved the redevelopment plan for the brownfield site, which had been abandoned for years.