burble
verb uk/ˈbɜː.bəl/ us/ˈbɝː.bəl/
(MAKE SOUND)
[ I ]（水）发出汩汩声
to make a low, continuous bubbling sound, like water moving over stones
(TALK)
[ I or T ]喋喋不休地说;嘟囔
to talk about something continuously and in a way that is not very clear
She was burbling (on) about what she'd do if she won the lottery. 她嘟嘟囔囔地在说如果中了彩票要做什么。