I will be back before you know it意思?

I will be back before you know it意思? Don'T Cry (I'Ll Be Back Before You Know It Baby) 歌词 如何翻译：“ You will be finished before you know it?” (1/2)-I will be back before Christmas.-I wish you ＿back befo he'll be back in no time before you know it You know I will be it will be months before he can come back. My heart was hart though I had know it will be before long!这 I will be back?It is a 翻译:It will there years before I come back. Thank you,I will be back 英语翻译when we look back at it all as i know we will~you and me