1. An area of study, work, or activity that has been established and practiced for a long period of time
Medicine is a longstanding field with centuries of tradition and research.
A medicina é um campo de longa data com séculos de tradição e pesquisa.
2. A professional discipline or domain that has existed for many years and has accumulated substantial knowledge and expertise
Archaeology remains a longstanding field that continues to uncover historical mysteries.
A arqueologia permanece um campo de longa data que continua a desvendar mistérios históricos.