evidential
adjective formal uk/ˌev.ɪˈden.ʃəl/ us/ˌev.ɪˈden.ʃəl/
提供证据的;基于证据的
providing or relating to evidence
This remains a complex investigation because of the quantity of evidential material to be examined. 这仍然是一项颇为复杂的调查，因为需要审查的证据材料数量很大。