What's he burbling about?
他在嘟囔些啥？
牛津词典
The water burbled over gravel...
水流过卵石，汩汩作响。
The river gurgled and burbled.
河水汩汩地流淌着。
He burbled something incomprehensible...
他不知咕哝了些什么东西。
Key burbled about the wonderful people who contribute to tourism...
基喋喋不休地谈论着那些对旅游业作出贡献的了不起的人物。
What's he burbling about?
他在嘟囔些啥？
《牛津高阶英汉双解词典》
"babbling brooks"