Libellulidae

例句：

1. 1.Beetles are known for their abilityto fly and their unique exoskeleton.
   甲虫以其飞行能力和独特的外骨骼而闻名。
2. 2. The wasp is asmall insect that feeds on otherinsects.
   黄蜂是一种小型昆虫，以其他昆虫为食。
3. 3. Beetles have been usedas a source of food andmedicine for centuries.
   甲虫自古以来就被用作食物和药材。