Farmers who used to practice traditional farming are now introducing machinery such as tractors.

tractors 是 tractor 的复数形式。tractor 由词根 tract（拉、拖）和后缀 -or（表示执行动作的人或物）组成，字面意思是"拖拉的机器"，即"拖拉机"，指用于农业耕作、牵引农具的机动车辆。