蝉科昆虫

例句：

1. 1. The locusts are a common pest in the summer.
   蝗虫是夏天常见的害虫。
2. 2. The locusts are a symbol of the summer heat.
   蝗虫象征着夏天的炎热。
3. 3. The locusts are a source of food for many animals.
   蝗虫是许多动物的食物来源。