鸭嘴兽是一种生活在澳大利亚的奇特生物。

The ___duckbill is a unique creature that lives in Australia.

这种植物的叶子长得很像鸭嘴，所以被称为鸭嘴草。

The plant is called ___duckbill grass because its leaves resemble a duck's bill.