Definition
To behave in a manner that is considered inappropriate, unacceptable, or beyond the bounds of what is expected or permitted.
行為越界
As a team leader, you cannot step out of line; you must lead by example.
作為團隊領導者，你不能踰矩；必須以身作則。
It's best not to step out of line at such a formal event, or you'll draw unnecessary attention.
在如此正式的場合最好別踰矩，否則會招來不必要的注意。
She warned her children that if they stepped out of line at their grandparents’ house, there would be serious consequences.
她警告她的孩子們，如果在祖父母家踰矩，將會有嚴重的後果。