off-limits

形容词 off-limits:

1. barred to a designated group
   同义词：out-of-bounds

off-lim.its

adj.（形容词）
Not to be entered or frequented by a designated group:
禁区的：指定的群体不能进入的：
例句：
a bar that is off-limits to military personnel.
一个军人禁入的酒馆