out of bounds
US /aʊt əv baʊndz/
UK /aʊt əv baʊndz/

1.
出界, 禁區
beyond the permitted or designated area
:
•
The ball went out of bounds.
球出界了。
•
That area is out of bounds to visitors.
那個區域對遊客來說是禁區。
2.
越界, 不恰當
unacceptable or improper behavior
:
•
His comments were completely out of bounds.
他的評論完全越界了。
•
That kind of language is out of bounds in a professional setting.
那種語言在專業場合是不允許的。