zhè / bù / bào / lù / wén / xué / shēn / kè / jiē / shì / le / dāng / shí / shè / huì / de / hēi / àn / miàn这部暴露文学深刻揭示了当时社会的黑暗面。This exposure literature profoundly reveals the dark side of society at that time.