step out of lineBEHAVE#to behave badly by breaking rules or disobeying orders 行为出轨;违反规矩[命令]step out of line• The boss is very tough on anyone who steps out of line.• The prisoners were warned that if they stepped out of line they would be severely punished.• He's not going to step out of line unnecessarily.
→ step out of line at step2(2)