mallardite

例句：

1. 1. The museum houses a rare collection of mallardite fossils.
   博物馆收藏着一些罕见的鸭嘴兽化石。
2. 2.The discovery of the mallardite egg has sparked renewed interest in marine biology.
   发现鸭嘴兽蛋引发了对海洋生物学的新一轮兴趣。
3. 3. The mallardite pouch is a unique adaptation that allows the bird to carry its young in a waterproof nest.
   鸭嘴兽袋是一种独特的适应特征，使这种鸟能够用防水巢来携带幼崽。