to stay motivated and passionate about something
поддерживать огонь (podderzhivat' ogon')
"Even after failure, he managed to keep the fire burning."
"Даже после неудачи он смог поддерживать огонь." (Dazhe posle neudachi on smog podderzhivat' ogon'.)
completely free; without restrictions
The rate at which a startup spends its capital.
to show respect or admiration for someone
when performers return to the stage to receive applause
to eliminate something completely
to continue progressing without slowing down