[lāo lāo dāo dāo]
talk nineteen to the dozen; babble on and on; constantly repeat ...; din into sb. [sb.'s] ears; go on [about at]; pick at; repeating over and over again; say over and over again; talk unnecessarily [annoyingly]
chatter interminably
嘮嘮叨叨說個沒完
There is no need to pick at him all day long. He's a child after all.
不要老是對他嘮嘮叨叨， 他畢竟還是個孩子嘛!
She's always going on about her various illnesses.
她老是嘮嘮叨叨地訴說她患的多種疾病。