你不在我身边我最孤单你不在我身边我最寂寞
[nĭ bù zài wŏ shēn biān wŏ zuì gū dān nĭ bù zài wŏ shēn biān wŏ zuì jì mò]
'I feel the loneliest and most miserable when you're not by my side' conveys intense feelings of solitude and sadness in the absence of someone important. Repetition underscores these strong sentiments.