gōng / rén / zhèng / zài / jiǎn / chá / qiáng / shàng / de / kǒng / xué / zhǔn / bèi / jìn / xíng / xiū / bǔ工人正在检查墙上的孔穴,准备进行修补。The workers are inspecting the holes in the wall and preparing to repair them.