1·The local stockbreedings were destructed because a large amount of pasture was changed to the tilth.
大量的牧场被改为耕地，当地的畜牧业遭到了严重的破坏。
2·But the brickwork structure used for Multiple-story residence has been forbidden in most of cities for firebricks destroy tilth and environment. So the new structural system is required to research.
而用于多层住宅的砖砌体结构，由于粘土砖破坏耕地和环境，已被大部分城市禁止，因此需要研究新型结构体系。