When I was 12, I led the initiation of a functional biogas plant.

当我 12 岁时，我领导启动了一个功能性沼气厂。

They've purchased a biogas plant, and nearly 50 percent of all their food waste is recycled.

他们购买了一座沼气厂，将近 50% 的食物垃圾得到了回收利用。