sweet potato leaf roller

例句：

1. 1.The sweet potato leaf roller is used to press the leaves of the sweet potato plant flat.
   甜土豆叶卷轴机用于将甜土豆植物的叶子压平。
2. 2.The machine has a simple design and is easy to operate.
   这种机器设计简单，易于操作。
3. 3. The sweet potato leaf roller is an important tool for processing sweet potatoes.
   甜土豆叶卷轴机是加工甜土豆的重要工具。