双翅类昆虫

例句：

1. 1. The butterfly is a beautiful insect with two wings.
   蝴蝶是一种美丽的昆虫，有两对翅膀。
2. 2. Many insects are found in the rainforest, including beetles and caterpillars.
   许多昆虫都在雨林中被发现，包括甲虫和毛虫。
3. 3. Biologists study the behavior of insects to understand their impact on ecosystems.
   生物学家研究昆虫的行为，以了解它们对生态系统的影响。