gōng / rén / yòng / diàn / zuàn / zài / qiáng / shàng / chuān / dòng / fāng / biàn / ān / zhuāng / diàn / xiàn工人用电钻在墙上穿洞,方便安装电线。The worker drilled holes in the wall to make it easier to install the wires.