diprotodont

简明释义

英[ˌdaɪproʊˈtɒdɑnt]美[ˌdaɪproʊˈtɒdɑnt]

n. 双门齿型

英英释义

单词用法

同义词

反义词

例句

1.The koala has one of the smallest brains in proportion to body weight of any mammal, being 60% smaller than that of a typical diprotodont, weighing only 19.2 g.

考拉大脑和身体的比重是哺乳动物中最小的之一，比它所属的双门齿型有袋动物的平均值小了60%，重量只有19.2克（就一个核桃那么大）。

2.The koala has one of the smallest brains in proportion to body weight of any mammal, being 60% smaller than that of a typical diprotodont, weighing only 19.2 g.

考拉大脑和身体的比重是哺乳动物中最小的之一，比它所属的双门齿型有袋动物的平均值小了60%，重量只有19.2克（就一个核桃那么大）。

3.The largest living diprotodont is the wombat, which can weigh up to 35 kilograms.

现存最大的双前齿目动物是袋熊，体重可达35公斤。

4.The diprotodont mammals, such as kangaroos and koalas, are iconic to Australia.

如袋鼠和考拉等双前齿目哺乳动物是澳大利亚的标志性动物。

5.Scientists study the evolution of diprotodont species to understand their adaptation to the environment.

科学家研究双前齿目物种的进化，以理解它们对环境的适应。

6.The diprotodont family includes a variety of marsupials, each with unique characteristics.

双前齿目家族包括多种有袋类动物，每种都有独特的特征。

7.Fossils of ancient diprotodont creatures provide insights into prehistoric ecosystems.

古代双前齿目生物的化石为史前生态系统提供了见解。

作文

The term diprotodont refers to a specific group of mammals that are characterized by having two forward-projecting front teeth in their lower jaw. This unique dental structure is a defining feature of this clade, which includes some of the most recognizable and beloved animals in Australia, such as kangaroos, koalas, and wombats. The word diprotodont is derived from the Greek words 'di', meaning 'two', and 'protos', meaning 'first', combined with 'odous', which means 'tooth'. Thus, it literally translates to 'two forward teeth'.Understanding the significance of diprotodont mammals extends beyond their dental characteristics. These creatures play crucial roles in their ecosystems. For instance, kangaroos, being herbivores, help in the maintenance of grasslands by grazing on vegetation. This grazing not only controls plant growth but also promotes biodiversity by allowing various plant species to thrive. Similarly, koalas, which primarily feed on eucalyptus leaves, contribute to the health of eucalyptus forests. By consuming leaves, they encourage new growth and support the overall ecosystem.Moreover, diprotodont mammals exhibit fascinating adaptations that enable them to thrive in diverse environments. For example, the wombat has a robust body and strong limbs, allowing it to dig extensive burrow systems. These burrows provide shelter from predators and harsh weather conditions. Additionally, the reproductive strategies of diprotodont mammals are noteworthy. Most of these animals are marsupials, meaning they give birth to relatively undeveloped young that continue to grow in a pouch. This reproductive method is particularly advantageous in the often unpredictable Australian climate, where food availability can vary dramatically.The study of diprotodont mammals also offers insights into evolutionary biology. These animals are part of the larger group of marsupials, which diverged from placental mammals millions of years ago. This divergence has led to unique evolutionary paths, resulting in the diverse range of species we see today. Researchers are continually exploring the genetic and ecological factors that have shaped the evolution of diprotodont mammals, providing valuable information about adaptation and survival.In addition to their ecological importance, diprotodont mammals hold cultural significance for many Indigenous Australian communities. These animals are often featured in traditional stories, art, and practices, symbolizing the deep connection between the land and its original inhabitants. Recognizing and respecting this cultural heritage is essential in conservation efforts, as it fosters a sense of stewardship and responsibility toward these iconic species.In conclusion, the term diprotodont encompasses more than just a unique dental trait; it represents a vital group of mammals that contribute significantly to their ecosystems while also holding cultural importance. Understanding the role of diprotodont mammals in ecology, their evolutionary history, and their cultural significance is crucial for promoting conservation efforts and ensuring the survival of these remarkable species. As we continue to learn more about them, we can appreciate not only their biological uniqueness but also their integral place in the tapestry of life on Earth.

术语diprotodont指的是一类特定的哺乳动物，它们的下颚具有两颗向前突出的前牙。这种独特的牙齿结构是这一类群的一个定义特征，包括一些在澳大利亚最具代表性和最受喜爱的动物，如袋鼠、考拉和土狼。diprotodont这个词来源于希腊词，其中'di'意为'两个'，'protos'意为'第一'，加上'odous'，意为'牙齿'。因此，它的字面意思是'两颗向前的牙齿'。理解diprotodont哺乳动物的重要性不仅仅在于它们的牙齿特征。这些生物在其生态系统中发挥着至关重要的作用。例如，袋鼠作为食草动物，通过吃草来帮助维护草原，这种放牧不仅控制了植物的生长，还通过允许各种植物种类繁荣发展来促进生物多样性。同样，主要以桉树叶为食的考拉也有助于桉树林的健康。通过消费叶子，它们促进了新生长，支持了整体生态系统。此外，diprotodont哺乳动物展现出令人着迷的适应能力，使它们能够在不同的环境中生存。例如，土狼拥有强壮的身体和强健的四肢，使其能够挖掘广泛的洞穴系统。这些洞穴为它们提供了来自捕食者和恶劣天气条件的庇护。此外，diprotodont哺乳动物的繁殖策略也值得注意。这些动物大多数是有袋类动物，意味着它们生下相对未发育完全的幼崽，这些幼崽会继续在育儿袋中成长。这种繁殖方法在澳大利亚气候变化多端的情况下特别有利，因为食物的可用性可能会剧烈变化。对diprotodont哺乳动物的研究还为进化生物学提供了见解。这些动物是有袋类动物这一更大群体的一部分，数百万年前与胎盘哺乳动物分道扬镳。这种分歧导致了独特的进化路径，形成了我们今天所看到的物种多样性。研究人员不断探索塑造diprotodont哺乳动物进化的遗传和生态因素，为适应和生存提供了宝贵的信息。除了生态重要性，diprotodont哺乳动物对于许多澳大利亚土著社区也具有文化意义。这些动物常常出现在传统故事、艺术和实践中，象征着土地与其原住民之间的深厚联系。认识到并尊重这种文化遗产对于保护工作至关重要，因为它培养了对这些标志性物种的管理和责任感。总之，术语diprotodont不仅包含独特的牙齿特征；它还代表了一类对其生态系统贡献重大并具有文化重要性的哺乳动物。理解diprotodont哺乳动物在生态学中的角色、它们的进化历史以及它们的文化意义，对于促进保护工作和确保这些杰出物种的生存至关重要。随着我们对它们的了解不断加深，我们不仅能欣赏到它们的生物独特性，还能理解它们在地球生命织锦中的重要地位。