gōng zuò rén yuán / cè liáng / le / hù nèi / de / jiǎ quán / nóng dù / bìng / tí xǐng / zhù hù / jí shí / tōng fēng

工作人员测量了户内的甲醛浓度，并提醒住户及时通风。

The staff measured the indoor formaldehyde concentration and reminded the residents to ventilate promptly.