aphides

例句：

1. 1. The aphids are tiny insects that feed on the sap of plants.
   蚜虫是微小的昆虫，它们以植物的汁液为食。
2. 2. The aphids were found on the leaves of the apple tree.
   蚜虫被发现在苹果树的叶子上。
3. 3. The farmers sprayed the fields with insecticide to kill the aphids.
   农民们用杀虫剂喷洒田野来杀死蚜虫。