She likes swans and koalas .

她喜欢天鹅和考拉。

Why do you love kangaroos and koalas ?

你为什么喜欢袋鼠和树袋熊？

Diseases peculiar to koalas began to take their toll .

无尾熊特有的疾病也开始大量削减它们的数量。

Koalas often sleep in the day and eat leaves at night .

袋树熊经常白天睡觉，晚上吃树叶。

All primates have fingerprints , as do some tree-dwelling mammals , such as koalas .

所有灵长类动物都有指纹，一些栖息在树上的哺乳动物如考拉也不例外。