unbuild

例句：

1. 1. The old building was unbuilt and left in a state of disrepair.
   那座旧建筑被拆除了，现在处于一片破败状态。
2. 2.The engineers were tasked with the unbuilding of the old factory.
   工程师们被指派负责拆除旧工厂的任务。
3. 3.The demolition of the old buildings is essential for the new development project.
   拆除旧建筑对于新开发项目至关重要。