Suízhe shíjiān de tuīyí, zhè jiàn shì de yǐngxiǎng zhújiàn dànhuà le.
As time passed, the impact of this event gradually faded.
Tips
usage
Can be transitive (to deliberately downplay something) or intransitive (to gradually fade). Also used literally for desalination: 海水淡化 (seawater desalination).