转身后你的身边不是我离开后我的身边不是你
[zhuăn shēn hòu nĭ de shēn biān bù shì wŏ lí kāi hòu wŏ de shēn biān bù shì nĭ]
The sentence translates as 'After turning around, you're not by my side anymore, and after I leave, I'm no longer by your side', conveying feelings of loss and separation, suggesting a break-up or estrangement from someone close.