They think they might have to do with the leak in underground natural gas line.

他们认为可能与地下天然气管道泄漏有关。

The most important part of this figure is the natural gas line.

该图最重要的部分是天然气管道。

That means no natural gas lines to new homes and apartments… The number is over 100 municipalities now that have taken some kind of action to phase out gas in their new construction.

这意味着新住宅和公寓将不再有天然气管道… … 目前已有 100 多个城市采取某种行动，在新建筑中逐步淘汰天然气。