tower slewing crane

例句：

1. 1. The tower slewing crane was used to lift heavyloads from the ground.
   塔式起重机被用来从地面举起重物。
2. 2. The towerslewing crane was acritical component of the construction project.
   塔式起重机是该建设项目的关键组成部分。
3. 3. The towerslewing crane was responsiblefor transporting materials to and from theconstruction site.
   塔式起重机负责将材料运送到和从建筑工地运送回来。