inert ammunition

例句：

1. 1. The inert substance was left to decompose naturally.
   这个无反应的物质自然分解了。
2. 2. The inert gas was released into the atmosphere.
   这种无反应的气体被释放到大气中。
3. 3. The inert material is not easily reactive.
   这种不活动的材料不容易反应。