imuran

例句：

1. 1. The imuran is a unique and fascinating species.
   这个物种独特且引人入胜。
2. 2. The imuran has been extinct for over 500 million years.
   这种生物已经灭绝了超过5亿年。
3. 3. The imuran plays an important role in the ecosystem.
   这种生物在生态系统中扮演着重要角色。