n.单孔目动物(卵生哺乳动物)

platypus is the best-known monotreme.
鸭嘴兽是最为人所知的单孔目动物。
The echidna is another example of a monotreme.
袋刺猬是另一种单孔目的例子。
Monotremes lay eggs instead of giving birth to live young.
单孔目动物产卵而不是直接生下幼崽。
There are only five species of monotremes in the world.
全世界只有五种单孔目动物。
Monotremes have a unique feature called electroreception.
单孔目动物具有一种独特的电感应能力。
These ancient mammals are found primarily in Australia and New Guinea.
这些古老的哺乳动物主要分布在澳大利亚和新几内亚。
Monotremes are often considered an evolutionary link between reptiles and mammals.
单孔目动物常被认为是爬行动物和哺乳动物之间的进化连接。
The platypus has venomous spurs on its hind legs, which is unusual for a mammal.
鸭嘴兽后腿有毒刺，这在哺乳动物中很罕见。
Monotremes have a leathery snout, which they use for detecting prey underwater.
单孔目动物有一个皮革般的鼻子，它们用它来探测水下的猎物。
Despite their odd appearance, monotremes play an important role in their ecosystems.
尽管外表奇特，但单孔目动物在其生态系统中发挥着重要作用。