unexpectedly or without warning
inesperadamente o sin previo aviso (inesperadamente o sin previo aviso)
"My old friend called me out of the blue after ten years."
"Mi viejo amigo me llamó de la nada después de diez años." (Mi viejo amigo me llamó **de la nada** después de diez años.)
to feel affection or fondness for someone
to aim for a difficult or ambitious goal
to be extremely surprised or frightened
to act honestly and treat others equally
to have an extremely analytical and efficient mind
to give praise or admiration to someone