ploughing disc harrow

例句：

1. 1. The farmer used a ploughing disc to prepare the soil for planting.
   这位农民使用犁耕盘来准备土壤种植。
2. 2. The harrow was used to level the ground before sowing seeds.
   耙子被用来平整土地，以便播种种子。
3. 3. The ploughing disc and harrow were essential tools in the agricultural process.
   犁耕盘和耙子是农业过程中必不可少的工具。