VERB
急促而含混不清地说;激动而口齿不清地说
If you say that someone is jabbering, you mean that they are talking very quickly and excitedly, and you cannot understand them.
例句
The girl jabbered incomprehensibly...
那个女孩儿叽里咕噜地说着,谁也没听懂。
After a minute or two I left them there jabbering away.
没几分钟,我就走开了,留下他们在那儿叽里咕噜地说个不停。