inert free gas

例句：

1. 1. The inert gases are released into the atmosphere during combustion.
   在燃烧过程中，惰性气体被释放到大气中。
2. 2. The inert material is not affected by temperature changes.
   这种材料不受温度变化的影响。
3. 3. The inert gas was used to prevent explosions during the experiment.
   在实验中，惰性气体被用来防止爆炸。