I am down as the first presenter.怎么翻译?i am down的用法

I am down as the first presenter.怎么翻译?i am down的用法 plastiscines的i am down i am down with I am going down I am down as well的中文意思. I’ am sitting down. 如何翻译? I am the going down hill怎么拼成一句话? i am down 中文歌词?by the plastiscines I am travelling down by the riverside i am down with the kids 如何翻译,down在这里是什么意思 求Plasticines 的 I am down tonight will.i.am的《Fall Down》 歌词