firing box

例句：

1. 1. The soldiers practiced their shooting skills in the firing box.
   士兵们在射击室里练习他们的射击技巧。
2. 2. The policeman was found in the firing box with a gun in his hand.
   警察被发现手持一支枪，藏在射击室里。
3. 3. The army had set up a firing box for the soldiers to practice their marksmanship.
   军队为士兵设置了射击室，让他们练习瞄准技巧。