pear aphid

例句：

1. 1. The pear aphid is a tiny pest that can damage the fruit.
   梨蚜虫是一种微小的害虫，可以损害水果。
2. 2. The pear aphid is responsible for the yellowing of the leaves on the tree.
   梨蚜虫负责树叶变黄。
3. 3. To control the pear aphid, farmers use insecticides and cultural practices.
   为了控制梨蚜虫，农民使用杀虫剂和农业实践。