metal intercepter

例句：

1. 1. The metal intercepter was used to detect the presence of hidden explosives.
   金属拦截器被用来探测隐藏的爆炸物。
2. 2. The metal intercepter detected a small piece of metal in the air.
   金属拦截器在空中探测到了一小片金属。
3. 3. The metal intercepter was used by the military to protect their base from enemy attack.
   金属拦截器被军方用来保护他们的基地免受敌人攻击。