histerical background 基本例句 历史背景 The XPCC was established against a special historical background.新疆生产建设兵团是在特殊历史背景下建立的。 His deep knowledge of the historical background enabled him to expatiate upon the significance of the movement.他对于历史背景的深刻了解使他能够详细阐述这场运动的意义。