out of line 不守规矩
behaving badly 行为恶劣
misbehave 行为不端
break the rules 违反规则
go astray 误入歧途
1. The teacher warned the students not to step out of line during the exam.
老师警告学生们不要在考试期间不守规矩。
2. If you keep stepping out of line, you will be expelled from the club.
如果你继续行为不端，你会被开除出俱乐部。
3. He felt he had no right to step out of line in such a formal meeting.
他觉得在那样正式的会议上自己无权越轨。
A: Why was John called into the principal's office?
A：为什么约翰被叫去校长室了？
B: Because he stepped out of line during the assembly.
B：因为他在集会时行为不端。
1) 行为不检点，不守纪律
2) 越轨，偏离正常轨道
3) 做出令人不快的举动
1. 不守规矩，行为不当
e.g.
Don't step out of line while I'm gone.
我不在的时候，别给我惹麻烦/不守规矩。
verb phrase
1. To behave in a way that is not acceptable or expected; to break social norms or rules.
Synonym: misbehave, behave badly, act out