The Guardian的歌詞中沒有單詞"delta"。可能是您聽到的歌詞有誤。建議您可以結合整首歌的歌詞進行理解記憶。以下是The Guardian的歌詞：
Oh, oh, oh, oh
Oh, oh, oh
You're the guardian
Of my broken heart
Oh, oh, oh
Oh, oh, oh
I'm the guardian
Of your weary soul
I've been lost in the desert
Trying to find my way back home
But you've been standing there
Through every storm and every wave
You're the guardian
Of my broken heart
You're the one who comforts me
When everything's in vain
You're the light in the darkest night
And you're my guardian angel again
Oh, oh, oh
Oh, oh, oh
I don't know what I'd do without you
Without you, yeah
Oh, oh, oh
Oh, oh, oh
I can feel it in the way you hold me
In your arms, yeah
Oh, oh, oh, oh (x2)
If everything goes black
And the world's gone away
You'll always be the guardian of me
And you're always here with me
Oh, I've found a new way home
To a place where I belong (x2)
You're the guardian (x2)
Of my broken heart (x2)
Oh, yeah (x2)