persicaria

例句：

1. 1.The persicaria is a popular green vegetable in the Mediterranean region.
   紫花苜蓿是地中海地区的一种受欢迎的绿色蔬菜。
2. 2.The farmers used to grow persicaria for their livestock.
   农民过去常种植紫花苜蓿供他们的牲畜食用。
3. 3.The persicaria has a high nutritional value and is often used as a supplement in human diets.
   紫花苜蓿具有很高的营养价值，经常被用作人类饮食的补充品。