kōng / qì / jìng / huà / qì / fàng / zài / kè / tīng / lǐ / kě / yǐ / jiǎn / shǎo / kōng / qì / zhōng / de / huī / chén

空气净化器放在客厅里，可以减少空气中的灰尘。

The air purifier is in the living room and can reduce dust in the air.