qīng jié gōng / yòng / ruǎn bù / cā shì / jìng miàn / zhí dào / shàng miàn / bú zài / liú xià / shuǐ hén

清洁工用软布擦拭镜面，直到上面不再留下水痕。

The cleaner wiped the mirror surface with a soft cloth until no water marks remained on it.