talk up a blue streak

Translations
говорить без умолку
Whenever she gets excited, she talks up a blue streak.
Когда она волнуется, она говорит без умолку.
Definitions
To talk rapidly and continuously, often in an animated or enthusiastic manner.
Words
streak

noun
полоса
talk

verb
говорить
talk up

verb
расхваливать
blue

adjective
синий