part of the furniture

US /pɑːrt əv ðə ˈfɜːrnɪtʃər/
UK /pɑːrt əv ðə ˈfɜːrnɪtʃər/
"part of the furniture" picture
1.

часть мебели, неотъемлемая часть

a person or thing that has been in a place or situation for so long that they are considered a permanent, unremarkable, or indispensable feature of it

:
After working here for twenty years, John has become part of the furniture.
Проработав здесь двадцать лет, Джон стал частью мебели.
The old clock in the corner has been there so long it's just part of the furniture.
Старые часы в углу стоят там так давно, что стали просто частью мебели.