plum red leaf spot

例句：

1. 1. Theplum tree is showing signs of the plumred leaf spot.
   这棵李子树出现了李子红叶斑病的迹象。
2. 2.The nursery staff noticed a few plumred leaf spots on the young trees.
   苗圃工作人员注意到几棵幼树出现了李子红叶斑病。
3. 3. The diseasecan spread quickly and cause significant damage tothe fruit crop.
   这种病害可以迅速传播，对水果作物造成严重损害。