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по квартире

around the apartment; in the same apartment

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phrase Rare #50,205
around the apartment; in the same apartment In сосед по квартире, it means someone who shares an apartment with you: a roommate.
RU: Она ходила по квартире и искала ключи.
EN: She walked around the apartment looking for her keys.

Но ходит по квартире, по гостиной.

But he walks around the apartment, around the living room.

— Боль и слава (2019)

Будешь всю оставшуюся жизнь меня по квартире на руках таскать?

Are you going to carry me around the apartment in your arms for the rest of my life?

— Ice (2018)

Том мой сосед по квартире.

Tom is my flatmate.

Другой мой сосед по квартире.

My other flatmate.

— Он снова здесь (2015)