gōng / rén / zhèng / zài / jiǎn / chá / wū / dǐng / de / wǎ / léng / què / bǎo / yǔ / shuǐ / néng / gòu / shùn / lì / liú / zǒu

工人正在检查屋顶的瓦楞，确保雨水能够顺利流走。

The workers are inspecting the rows of roof tiles to ensure that rainwater can drain away properly.