wallaroos

A wallaroo is a medium-sized marsupial. It can also be:

1. Wallaroos can often be seen hopping along the rocky hills of Australia.
   Wallaroo 经常可以在澳大利亚的岩石山丘上蹦跳。
2. The wallaroos are smaller than the kangaroos, but just as strong.
   Wallaroo 比袋鼠要小，但同样强壮。