redback spider

例句：

1. 1.The redback spider is a common insect that can be found on many surfaces.
   红背蜘蛛是一种常见的昆虫，可以在许多表面上找到。
2. 2. The redback spider has eight legs and a long body.
   红背蜘蛛有八条腿和一条长身体。
3. 3. Redback spiders are known for their ability to spin silk, which they use to build webs.
   红背蜘蛛以其能够编织丝线的能力而闻名，它们用这些丝线来建造网。