rearguard編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看rearguardrearguard — 名詞名詞1. a group at the back of an army that protects it from attack1.名詞釋義後衛a group at the back of an army that protects it from attack例句The rearguard defended the retreating troops.