已遗忘我的过去已逝去我的童真
[yĭ yí wàng wŏ de guò qù yĭ shì qù wŏ de tóng zhēn]
This means 'I've forgotten my past; my childish innocence has disappeared.' It suggests the speaker acknowledges their own personal growth, where past experiences are now vague memories and childlike qualities lost over time.