single-row disc-harrow

例句：

1. 1. The farmer used a single-row disc-harrow to prepare the soil before planting.
   农民使用单行圆盘耙在播种前准备土壤。
2. 2.The single-row disc-harrow was very effective in breaking up the clods in the field.
   单行圆盘耙在田地里打破硬块非常有效。
3. 3.The farmer used the single-row disc-harrow to level the ground before sowing seeds.
   农民使用单行圆盘耙在播种前平整土地。