qīng / jié / gōng / gāng / tuō / wán / dì / mǎ / shàng / zài / mén / páng / fàng / shàng / xiǎo / xīn / dì / huá / de / pái / zi

清洁工刚拖完地，马上在门旁放上“小心地滑”的牌子。

The cleaner had just mopped the floor and immediately put up a “Caution: Wet Floor” sign by the door.