leaf blister

例句：

1. 1. The leaves of the tree are covered in a yellowish-green mottled blisters.
   这棵树的叶子上覆盖着黄色和绿色的斑点状疱疹。
2. 2.The farmer noticed that some of the leaves were turning brown and had developed leaf blisters.
   这位农民注意到，一些叶子开始变黄并出现了叶疱疹。
3. 3. The plant was suffering from leaf blisters caused by a fungal infection.
   这种植物受到了真菌感染引起的叶疱疹的困扰。