It seems like you might be referring to a phrase or sentence, but without more context, it's a bit unclear. If you're looking for the meaning or usage of "accustomed to hearing it," here's an explanation:
"Accustomed to hearing it" means that someone is used to hearing something regularly or repeatedly. It implies that the person has become familiar with the sound, words, or information over time.
For example:
"I'm accustomed to hearing my neighbors' barking dogs at all hours of the night."
"After living in the city for years, I'm accustomed to hearing sirens and the hustle and bustle of traffic."
If you have a specific context or sentence in mind, please provide more details, and I can offer a more tailored response.