monotreme

简明释义

英[ˈmɒnətriːm]美[ˈmɑːnətriːm]

n. 单孔目动物；单孔类动物

英英释义

单词用法

同义词

反义词

例句

1.I would dream to do this in a monotreme, to find out if we could have a narcoleptic platypus.

我梦想能在单孔目动物上进行此类研究，看能否改造出一只发作性睡病的鸭嘴兽。

2.The genetic sequence of this Aussie monotreme (a type of mammal) is detailed in the May 8 issue of the journal Nature.

这只澳洲单孔目动物（哺乳动物的一种）的基因序列公布在5月8日出版的《自然》杂志上。

3.The genetic sequence of this Aussie monotreme (a type of mammal) is detailed in the May 8 issue of the journal Nature.

这只澳洲单孔目动物（哺乳动物的一种）的基因序列公布在5月8日出版的《自然》杂志上。

4.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。

5.The platypus is perhaps the most famous monotreme in the world.

鸭嘴兽可能是世界上最著名的单孔目。

6.Scientists study monotremes to understand the evolution of mammals.

科学家研究单孔目以了解哺乳动物的进化。

7.The echidna is another example of a monotreme found in Australia.

针鼹是澳大利亚发现的另一个单孔目的例子。

8.Unlike most mammals, monotremes lay eggs instead of giving birth to live young.

与大多数哺乳动物不同，单孔目产卵而不是生下活的幼崽。

9.The monotreme is a unique group of egg-laying mammals.

这种单孔目是一个独特的卵生哺乳动物群体。

作文

Monotremes are a fascinating group of egg-laying mammals that provide unique insights into the evolutionary history of mammals. The term monotreme refers specifically to these unusual creatures, which include the platypus and several species of echidnas. Unlike most mammals that give birth to live young, monotremes lay eggs, making them a rare exception in the mammalian world. This reproductive method is reminiscent of reptiles and birds, suggesting that monotremes retain some primitive characteristics from their ancestors.The platypus, one of the most well-known monotremes, is native to Australia and is easily recognizable due to its distinct features, such as a duck-bill, webbed feet, and a flat tail. It is an aquatic animal that spends much of its time swimming in rivers and streams, hunting for insects and crustaceans. The platypus is also unique in that it produces milk to feed its young, but unlike other mammals, it does not have teats; instead, the milk pools in grooves on its abdomen, allowing the young to lap it up. This unusual method of nursing adds to the charm and intrigue of monotremes.Echidnas, another type of monotreme, are spiny anteaters that can be found in Australia and New Guinea. They have a more terrestrial lifestyle compared to the platypus and are known for their spiky fur and long snouts, which they use to forage for ants and termites. Like the platypus, echidnas also lay eggs and nurse their young with milk. However, echidna eggs are incubated in a special pouch, providing additional protection for the developing young.The study of monotremes is crucial for understanding the evolution of mammals. They represent a link between reptiles and more advanced mammals, showcasing traits that have been lost in most modern mammals. For example, the ability to lay eggs is a significant trait that highlights the evolutionary path taken by monotremes. Their existence challenges the traditional view of mammalian reproduction and raises questions about the diversity of reproductive strategies in the animal kingdom.Conservation efforts are essential for the survival of monotremes, as both the platypus and echidna face threats from habitat loss, climate change, and predation by invasive species. Protecting their natural habitats is vital to ensure that these remarkable animals continue to thrive in the wild. Public awareness and education about the importance of monotremes can help foster appreciation and support for conservation initiatives.In conclusion, monotremes are a unique and captivating group of mammals that offer valuable insights into the evolutionary history of the animal kingdom. Their distinctive reproductive methods and physical characteristics set them apart from other mammals, making them a subject of great interest for scientists and nature enthusiasts alike. By studying and protecting these extraordinary creatures, we can gain a deeper understanding of biodiversity and the intricate web of life on our planet.

单孔目是一个迷人的卵生哺乳动物群体，为我们提供了关于哺乳动物进化历史的独特见解。术语monotreme专指这些不寻常的生物，包括鸭嘴兽和几种针鼹。与大多数生下活幼崽的哺乳动物不同，monotremes产卵，使它们在哺乳动物世界中成为一个罕见的例外。这种生殖方式让人想起爬行动物和鸟类，表明monotremes保留了一些来自祖先的原始特征。鸭嘴兽是最著名的monotreme之一，原产于澳大利亚，由于其独特的特征，如鸭嘴、蹼足和扁平尾巴，容易识别。它是一种水生动物，大部分时间在河流和小溪中游泳，捕猎昆虫和甲壳类动物。鸭嘴兽也很独特，因为它会产生乳汁来喂养幼崽，但与其他哺乳动物不同的是，它没有乳头；相反，乳汁在腹部的沟槽中聚集，让幼崽舔食。这种独特的哺乳方式增加了monotremes的魅力和吸引力。针鼹是另一种monotreme，是刺猬类动物，可以在澳大利亚和新几内亚找到。与鸭嘴兽相比，它们的生活方式更加陆地化，以其尖刺的毛发和长鼻子而闻名，利用这些特征觅食蚂蚁和白蚁。像鸭嘴兽一样，针鼹也产卵并用乳汁喂养幼崽。然而，针鼹的卵会在一个特殊的袋子里孵化，为发育中的幼崽提供额外的保护。对monotremes的研究对于理解哺乳动物的进化至关重要。它们代表了爬行动物和更高级哺乳动物之间的联系，展示了大多数现代哺乳动物已失去的特征。例如，产卵的能力是一个显著的特征，突显了monotremes所走的进化道路。它们的存在挑战了传统的哺乳动物生殖观，并引发了对动物王国中生殖策略多样性的质疑。保护工作对monotremes的生存至关重要，因为鸭嘴兽和针鼹都面临栖息地丧失、气候变化和入侵物种捕食等威胁。保护它们的自然栖息地对于确保这些非凡动物在野外继续繁衍生息至关重要。公众对monotreme重要性的认识和教育可以帮助培养对保护倡议的欣赏和支持。总之，monotremes是一个独特且引人入胜的哺乳动物群体，为我们提供了关于动物王国进化历史的宝贵见解。它们独特的生殖方式和身体特征使它们与其他哺乳动物区分开来，成为科学家和自然爱好者极感兴趣的研究对象。通过研究和保护这些非凡的生物，我们可以更深入地理解生物多样性以及我们星球上生命的复杂网络。