directly involved in the most active or dangerous part of something
непосредственно вовлечён в самую активную или опасную часть чего-то (neposredstvenno vovlyuchyon v samuyu aktivnuyu ili opasnuyu chast' chego-to)
"Doctors were on the front line during the pandemic."
"Врачи были на передовой во время пандемии." (Vrachi byli **na peredovoy** vo vremya pandemii.)
to have access to vast information easily, especially online
a secret or unauthorized way to access a system or informati...
to be able to think of interesting and unusual ideas
To be very close friends who share secrets.
to engage in the hard or unpleasant work of a task
to stop being interested in something