单词monotreme
n.: 单孔目动物(卵生哺乳动物)
网络: 单孔类动物;原兽亚纲单孔目
单孔目动物(卵生哺乳动物):
a class of animal including the echidna and the platypus , which lays eggs, but also gives milk to its babies
【动物;动物学】单孔目动物〔包括鸭嘴兽和针鼹〕
单孔类动物
复数:monotremes
The Australian short-beaked echidna, a monotreme, is one of the oldest living mammals on earth.
澳大利亚短吻针鼹,一单孔类动物,是现存最古老的地球上的哺乳动物之一。