gang disc plough

例句：

1. 1. The gang disc plough is an essential tool for farm work.
   农用拖拉机是农场工作必不可少的工具。
2. 2. The farmer used the gang disc plough to till the fields.
   农民使用农用拖拉机翻耕田地。
3. 3.The gang disc plough has greatly improved the efficiency of agricultural production.
   农用拖拉机大大提高了农业生产的效率。