междувременно

In a sentence

• Аз чакам автобуса; междувременно, чета книга.

  I am waiting for the bus; meanwhile, I am reading a book.

  Here, 'междувременно' is used to indicate an activity occurring during a simultaneous waiting period.

• Междувременно ще подредя кухнята, докато чакам гостите.

  In the meantime, I will tidy up the kitchen while waiting for the guests.

  'Междувременно' emphasizes the intention to use spare time efficiently before a main event.

• Тя беше на среща, а той, междувременно, се занимаваше със своите проекти.

  She was in a meeting while he, in the meantime, worked on his projects.

  In this instance, 'междувременно' denotes parallel actions occurring independently in time.