HSK 7-9
Wùmái tiānqì wǒmen dōu kāi kōngqì jìnghuàqì.
On smoggy days we all run the air purifier.
HSK 7-9
Zhè tái kōngqì jìnghuàqì dài HEPA lǜwǎng.
This air purifier comes with a HEPA filter.
HSK 7-9
Jiālǐ yǎng chǒngwù zuìhǎo mǎi gè kōngqì jìnghuàqì.
If you keep pets at home, it's best to get an air purifier.
