wallaroo

例句：

1. 1. The wallaby is a small mammalfound in Australia.
   袋鼠是一种在澳大利亚发现的小型哺乳动物。
2. 2. The wallaby isknown for its unique ability to jump highinto the air.
   袋鼠以其独特的跳跃能力而闻名。
3. 3. The wallaby is oftenused as an indicator of the health ofthe Australian ecosystem.
   袋鼠常被用作衡量澳大利亚生态系统健康状况的指示器。