gas invasion

例句：

1. 1. The gas leak caused a serious gas invasion in the area.
   气体泄漏导致该地区发生了严重的气体入侵。
2. 2. Gases are often used to detect underground water sources.
   气体常用于探测地下水源。
3. 3. The gas explosion was a wake-up call for the safety measures in the area.
   气体爆炸是该区域安全措施的警钟。