朦朦胧胧的只是回忆模模糊糊的只是曾经
[méng méng lóng lóng de zhĭ shì huí yì mó mó hú hú de zhĭ shì céng jīng]
'Hazy memories are just remnants of the past' suggests blurry, vague recollections or experiences that seem distant and unclear, emphasizing the impermanence of things.