The event was realistically recreated in the documentary.

realistically 是由形容词 realistic（现实的、真实的）加上副词后缀 -ally 构成的副词。realistic 来自名词 reality（现实）加上形容词后缀 -istic，表示"与现实相符的"。realistically 意思是"真实地、逼真地"，强调对现实的准确再现。