He chuntered on during the meeting for half an hour without making any point.

### 解释 chuntered 是动词 chunter 的过去式，chunter 是一个英式英语中的非正式用语，意思是"喋喋不休地抱怨或唠叨"，通常带有负面含义，指说话内容无重点且令人厌烦。