to remain behind or hesitate to act
оставаться позади или колебаться действовать (ostavat'sya pozadi ili kolebatsya deystvovat')
"If you hang back, you might miss the opportunity."
"Если вы останетесь позади, вы можете упустить возможность." (esli vy ostanetes' pozadi, vy mozhete upustit' vozmozhnost')
to be so surprised that you doubt what you see
to inhale air deeply
to have more power or advantage over others
to spend a lot of time working
to be in a very dangerous or uncertain situation
to create a situation where one has limited options