marsupium

简明释义

英[mɑːˈsjuːpɪəm]美[mɑrˈsjʊpɪəm]

n. 育幼袋

复 数 m a r s u p i a

英英释义

单词用法

同义词

反义词

例句

1.Mammals of which the females have a pouch the marsupium containing the teats where the young are fed and carried.

哺乳动物的一种，其雌性动物有一个长头并在其中喂养和携带幼子的袋子。

2.Well-known for their leaping abilities and the female pouch for carrying young (marsupium), kangaroos are a nationally recognized icon of Australia.

它们以跳跃能力和雌性通过育儿袋来承载幼崽而闻名，并且是澳大利亚的国家象征。

3.Well-known for their leaping abilities and the female pouch for carrying young (marsupium), kangaroos are a nationally recognized icon of Australia.

它们以跳跃能力和雌性通过育儿袋来承载幼崽而闻名，并且是澳大利亚的国家象征。

4.The marsupium is a unique feature of marsupials.

在有袋动物中，袋是一个独特的特征。

5.The kangaroo carries its young in a marsupium.

袋鼠把幼崽放在袋里。

6.Some species of wallabies have a well-defined marsupium.

一些种类的岩袋鼠有明显的袋。

7.The marsupium provides a safe environment for developing offspring.

袋为发育中的后代提供了一个安全的环境。

8.Baby possums stay in their mother's marsupium for several months.

小负鼠会在母亲的袋里待上几个月。

作文

In the fascinating world of zoology, one term that often comes up is marsupium, which refers to the pouch found in certain mammals, particularly marsupials. This unique adaptation is most commonly associated with animals such as kangaroos, koalas, and possums. The marsupium serves a critical function in the reproductive process of these species, allowing them to nurture and protect their young in a safe environment. Understanding the significance of the marsupium can provide deeper insights into the evolutionary strategies of marsupials and their survival in various habitats.The marsupium is not merely a physical structure; it represents a remarkable evolutionary trait that distinguishes marsupials from placental mammals. While placental mammals give birth to relatively developed young that have been nourished through a complex placenta, marsupials give birth to underdeveloped offspring. These tiny, helpless young must then crawl into the marsupium shortly after birth, where they attach to a teat and continue their development in a secure environment. This method of reproduction allows marsupials to have shorter gestation periods, which can be advantageous in fluctuating environmental conditions.The presence of a marsupium also highlights the diverse strategies that mammals have evolved to ensure the survival of their species. For instance, the marsupium provides not only a safe haven for the young but also facilitates easy access to milk, which is critical for their growth and development. In this way, the marsupium acts as a nurturing space where the young can thrive while remaining protected from predators and environmental threats.Interestingly, the structure and function of the marsupium can vary significantly among different marsupial species. For example, in kangaroos, the marsupium is a well-developed pouch that opens upwards, allowing the mother to carry her young while moving. In contrast, some smaller marsupials may have less pronounced pouches or even no pouch at all, relying instead on other forms of maternal care. This variation underscores the adaptability of marsupials to their specific ecological niches and reproductive strategies.Moreover, the study of the marsupium offers valuable insights into the evolutionary history of mammals. Fossil evidence suggests that the ancestors of modern marsupials once roamed the Earth alongside placental mammals. Understanding how the marsupium evolved and adapted over millions of years can shed light on the broader patterns of mammalian evolution and diversification.In conclusion, the term marsupium encapsulates much more than just a biological feature; it signifies an evolutionary innovation that has played a crucial role in the survival of marsupials. By providing a nurturing environment for their young, the marsupium not only enhances the reproductive success of these species but also showcases the incredible diversity of life on our planet. As we continue to explore the wonders of the animal kingdom, understanding terms like marsupium will deepen our appreciation for the complexities of nature and the various strategies organisms employ to thrive in their environments.

在动物学的迷人世界中，一个常常出现的术语是marsupium，指的是某些哺乳动物，特别是有袋类动物所具有的袋子。这种独特的适应性最常与袋鼠、考拉和负鼠等动物相关。marsupium在这些物种的繁殖过程中起着至关重要的作用，使它们能够在安全的环境中培养和保护幼崽。理解marsupium的重要性可以为我们提供更深入的见解，了解有袋类动物的进化策略及其在各种栖息地中的生存。marsupium不仅仅是一个物理结构；它代表了一种显著的进化特征，使有袋类动物与胎盘哺乳动物区分开来。虽然胎盘哺乳动物会生下相对发育成熟的幼崽，这些幼崽通过复杂的胎盘获得营养，但有袋类动物则生下未发育完全的后代。这些微小而无助的幼崽必须在出生后不久爬入marsupium，在那里附着在乳头上，继续在安全的环境中发育。这种繁殖方式使得有袋类动物能够拥有较短的妊娠期，这在环境条件变化时可能是有利的。marsupium的存在还突显了哺乳动物为了确保物种生存而进化出的多样化策略。例如，marsupium不仅为幼崽提供了一个安全的庇护所，还方便幼崽轻松获取乳汁，这对它们的生长和发育至关重要。因此，marsupium充当了一个滋养空间，让幼崽在保护中茁壮成长，同时免受捕食者和环境威胁的侵害。有趣的是，不同的有袋类动物物种在marsupium的结构和功能上可能存在显著差异。例如，在袋鼠中，marsupium是一个向上打开的发达袋子，允许母亲在移动时携带幼崽。相比之下，一些较小的有袋类动物可能没有明显的袋子，甚至没有袋子，而是依赖其他形式的母爱。这种差异突显了有袋类动物对特定生态位和繁殖策略的适应性。此外，对marsupium的研究提供了对哺乳动物进化历史的宝贵见解。化石证据表明，现代有袋类动物的祖先曾与胎盘哺乳动物一起在地球上漫游。理解marsupium是如何在数百万年中进化和适应的，可以揭示更广泛的哺乳动物进化和多样化模式。总之，术语marsupium不仅仅是一个生物特征；它象征着一种进化创新，在有袋类动物的生存中发挥了关键作用。通过为幼崽提供一个滋养环境，marsupium不仅增强了这些物种的繁殖成功率，还展示了我们星球上生命的惊人多样性。当我们继续探索动物王国的奇观时，理解像marsupium这样的术语将加深我们对自然复杂性的欣赏，以及生物体为了在其环境中生存而采用的各种策略。