嗯……我自己没读过英文原著并且英语水平也不够,以下是纯猜测不保证准确,如果错了请告诉我……? 感觉听读音Choo像是用来代替what you或者what are you之类的,woss可能是what‘s,第二页那个long's it's on land可能是as long as it's on land,dincha可能是didn't you,大概……?
I think we can just put it this way: Choo=What you Wass=what's Rowling's just trying to emphasize the strong accent. Read them out and you'll find that. And the same as Hagrid...lol