crop up
US /krɑːp ʌp/
UK /krɑːp ʌp/

1.
surgir, aparecer, ocorrer
appear, happen, or come to attention unexpectedly
:
•
Problems always seem to crop up when you least expect them.
Problemas sempre parecem surgir quando você menos espera.
•
A few interesting points cropped up during the discussion.
Alguns pontos interessantes surgiram durante a discussão.