Zhè / gēn / tōng / fēng / guǎn / dǔ / zhù / le / fáng / jiān / lǐ / de / kōng / qì / bù / liú / tōng这根通风管堵住了,房间里的空气不流通。This ventilation duct is blocked, so the air in the room does not circulate.