喋喋不休

喋喋不休 [dié dié bù xiū]

1. ■ chatter without stop; chatter [rattle] away; a ceaseless chattering -- muttering and grumbling; an endless stream of words; chatter like a magpie; gabble on and on; go [run; talk] nineteen to the dozen; keep (on) clamouring; repeat endlessly; rattle on; talk an arm [a hind leg] off; talk endlessly about ...; talk one's head off; tall sb's ear off:

只要讲到她自己， 她就喋喋不休地讲个没完。 Once she started to talk about herself, she would rattle away for a long time.