post crane

例句：

1. 1.The post crane was used to lift heavy loads from the ground.
   起重机被用来从地面上提起重物。
2. 2. The post crane was a crucial part of the construction project.
   起重机是这个建筑项目的关键部分。
3. 3.The post crane operator had to be careful while operating it.
   起重机操作员在操作时必须小心。