kuàng gōng / yán zhe / hàng dào / shēn rù / dì xià / jiǎn chá / xīn / wā chū / de / zuò yè miàn / shì fǒu / ān quán

矿工沿着巷道深入地下，检查新挖出的作业面是否安全。

The miners went deep underground along the tunnel to check whether the newly excavated work face was safe.