Over the years, the group has made stoves using mud, bricks, sheet metal, clay, ceramics and old oil drums. Most of the stoves look like large, deep cooking pots.

多年来，研究中心已经研制了使用泥土、砖块、金属薄片、粘土、陶瓷、旧油桶的火炉，大部分的炉子都像又大又深的饭锅。

youdao

Over the years, the group has made stoves using mud,bricks,sheet metal,clay, ceramics and old oil drums.

VOA: special.2010.02.01