field of fire

例句：

1. 1.The soldiers were practicing their marksmanship in the field of fire.
   士兵们正在练习他们的射击技巧，在射击区内。
2. 2.The enemy was pinned down in the field of fire, unable to move.
   敌人被限制在射击区内，无法移动。
3. 3.The hunters had to stay within the field of fire to avoid being shot by the deer.
   猎人必须保持在射击区内以避免被鹿射中。