i am quite busy down here. down 在这里是什么用法?

i am quite busy down here. down 在这里是什么用法? i am down with the kids 如何翻译,down在这里是什么意思 i am quite busy at I am down as the first presenter.怎么翻译?i am down的用法 I am sitting down是什么时态 i am down with I am going down i am going down是啥意思啊,be gong down有这个用法? pay 20 percent down for it. 这里的20 percent down是什么用法? plastiscines的i am down 这里的down是什么词性 here/ down there的意义和用法.