心里有个旋律不完整的歌曲
[xīn lĭ yŏu gè xuán lǜ bù wán zhĕng de gē qŭ]
This translates to 'there’s an incomplete melody of a song in my heart.' It suggests yearning or longing, often for something unfinished or left behind, possibly representing an unresolved feeling or uncompleted experience.