fertilizer attachment

例句：

1. 1.The farmer attached a new fertilizer to the plant's roots.
   农民给植物的根部装上了新的肥料。
2. 2.The engineer designed an attachment for the tractor to increase its efficiency.
   工程师设计了一种拖拉机附件，以提高其效率。
3. 3. The scientist attached a sensor to the robot's arm to monitor its movements.
   科学家将传感器连接到机器人的手臂上，以监测其运动。