Guānfāng shìtú dànhuà zhè cì shìgù de yánzhòngxìng.
Officials tried to downplay the severity of this accident.
Tips
usage
Can be transitive (to deliberately downplay something) or intransitive (to gradually fade). Also used literally for desalination: 海水淡化 (hǎishuǐ dànhuà, seawater desalination).