step out of line
US /stɛp aʊt əv laɪn/
UK /stɛp aʊt əv laɪn/

成语
1.
越轨, 行为不端
to behave badly or break the rules
示例:
•
If you step out of line, you'll be punished.
如果你越轨,你就会受到惩罚。
•
The teacher warned the students not to step out of line during the field trip.
老师警告学生在实地考察期间不要越轨。
在 Lingoland 学习这个单词