miàn duì / tū fā / gù zhàng / gōng chéng shī / yī mǎ dāng xiān / xùn sù / zhǎo dào / le / wèn tí / de / yuán yīn面对突发故障,工程师一马当先,迅速找到了问题的原因。When faced with the sudden malfunction, the engineer took the lead and quickly found the cause of the problem.