theoretical
adjective uk/θɪəˈret.ɪ.kəl/ us/ˌθiː.əˈret̬.ə.kəl/
C2 理论上的;纯理论的
based on the ideas that relate to a subject, not the practical uses of that subject
theoretical physics 理论物理
C2 推想的，假设的
related to an explanation that has not been proved