zhè / piān / bào / dào / dòng / chuān / le / wèn / tí / de / biǎo / miàn / jiē / shì / le / bèi / hòu / de / yuán / yīn这篇报道洞穿了问题的表面,揭示了背后的原因。The report saw through the surface of the issue and revealed the reasons behind it.