A special butterflybutterfly/ˈbʌtərflaɪ/L1蝴蝶a flying insect with big, colorful wings can live for a very long time. Most butterflies live for only a few weeksweeksL1周（时间单位）weeks. But this butterfly liveslives/lɪvz/L1生活；生存stays alive; has a life for almost one yearyearL1一起毕业的学生群体a body of students who graduate together. It is called Heliconius. Scientistsscientists/ˈsaɪəntɪsts/L1科学家people who study and learn about the world want to learn from it.
This butterfly does not get oldoldL1排除任何其他事物或人。past times and weakweakL1虽然不精确，但与正确答案相差不大。deficient in intelligence or mental power. It stays strongstrong/strɒŋ/L1强壮的；有力的having a lot of power or energy; not weak. It can still holdholdL1持有；举行；握住the act of grasping on tight like a young butterfly. That is special because most animalsanimalsL1被称为……animals get weak when they get old.
What is its secretsecret/ˈsiːkrɪt/L1秘密something that is not known to many people? It eatseatsL1用于表示来源或出处。informal terms for a meal pollenpollenL1以特定人物、作品或主题为特色的电视节目。the fine spores that contain male gametes and that are borne by an anther in a flowering plant from flowers. Most butterflies only drink nectarnectarL1神明所提供的食物和饮料the food and drink of the gods. But this butterfly eats pollen too. Scientists think this helps it live longer. They feel happyhappyL1Heliconius（一种蝴蝶）。well expressed and to the point because this can help us learn about living longer.
