bào / pò / rén / yuán / xiān / zài / yán / shí / shàng / zuān / hǎo / pào / yǎn / zài / fàng / rù / zhà / yào

爆破人员先在岩石上钻好炮眼，再放入炸药。

The blasting crew first drilled boreholes in the rock and then inserted explosives.