crop up
US /krɑːp ʌp/
UK /krɑːp ʌp/

1.
surgir, aparecer, presentarse
appear, happen, or come to attention unexpectedly
:
•
Problems always seem to crop up when you least expect them.
Los problemas siempre parecen surgir cuando menos los esperas.
•
A few interesting points cropped up during the discussion.
Algunos puntos interesantes surgieron durante la discusión.