loader gathering head

例句：

1. 1.The loader is used to load and unload goods.
   装载机用于装卸货物。
2. 2.The crane operator needs to be trained in safe lifting techniques.
   起重机操作员需要接受安全起重技术培训。
3. 3. The loader was used to transport heavy materials from the construction site.
   装载机被用来从建筑工地运输重材料。