out of bounds

名词 out of bounds:

1. a line that marks the side boundary of a playing field
   同义词：sideline

形容词 out of bounds:

1. outside the foul lines
   同义词：out-of-bounds
2. barred to a designated group
   同义词：off-limits, out-of-bounds

1. A serve or return that falls out of bounds in a court game.
   界外球网球比赛中落入球场外的发球或回球
2. The local bars had been placed out of bounds to troops.
   当地的酒吧都已被列为禁止军人进入的场所。
3. The town's pubs and bars are out of bounds to troops.
   军人不得进入城里的酒馆和酒吧。