methane accumulation

例句：

1. 1. The process of methane accumulation is a complex one that requires careful monitoring.
   甲烷积累的过程是一个复杂的过程，需要仔细监测。
2. 2. In the absence of proper ventilation, methane accumulation can lead to health issues.
   如果没有适当的通风，甲烷积累可能会导致健康问题。
3. 3.The study found that methane accumulation was significantly reduced in areas with efficient waste management systems.
   研究发现，在有高效的废物管理系统的地区，甲烷积累显著减少。