plantigrade

简明释义

英[ˈplæntɪˌɡreɪd]美[ˈplæntəˌɡreɪd]

adj. 踯行的；踯行类的

n. 踯行动物

英英释义

单词用法

同义词

反义词

例句

1.It has the plantigrade feet (heel and sole touching the ground) typical of bears, with five sharp, curved claws on each foot for grasping the ice and holding its prey.

它有熊的跖行足的特征，有每只脚上的五个弯曲锋利的爪子用来抓住冰和紧握猎物。

2.It has the plantigrade feet (heel and sole touching the ground) typical of bears, with five sharp, curved claws on each foot for grasping the ice and holding its prey.

它有熊的跖行足的特征，有每只脚上的五个弯曲锋利的爪子用来抓住冰和紧握猎物。

3.Elephants are another example of plantigrade creatures, using their large feet to support their weight.

大象是另一个平足动物的例子，它们用巨大的脚来支撑自己的体重。

4.Unlike plantigrade animals, cats and dogs are digitigrade, walking on their toes.

与平足动物不同，猫和狗是趾行动物，它们是用脚趾行走的。

5.Bears are classified as plantigrade animals because they walk on the soles of their feet.

熊被归类为平足动物，因为它们是用脚底行走的。

6.The plantigrade posture of some animals helps them maintain balance while foraging.

一些动物的平足姿势帮助它们在觅食时保持平衡。

7.Humans are also plantigrade, which allows us to have a stable base for walking.

人类也是平足动物，这使我们在行走时有一个稳定的基础。

作文

The term plantigrade refers to a type of locomotion in which an animal walks on the soles of its feet, as opposed to walking on its toes or other parts of the foot. This characteristic can be observed in various mammals, including humans, bears, and some primates. Understanding the implications of being plantigrade is essential for comprehending how these animals move and interact with their environment.To begin with, plantigrade animals have a unique skeletal structure that supports their method of movement. For instance, in humans, the bones of the feet and ankles are designed to bear weight evenly across the entire foot. This design allows us to walk upright, providing stability and balance. Similarly, bears, which are also plantigrade, have large, flat feet that help distribute their weight effectively when they walk. This adaptation is crucial for their survival, allowing them to traverse diverse terrains, from forests to mountains.In contrast, many other animals, such as cats and dogs, are classified as digitigrade, meaning they walk on their toes. This method of locomotion enables them to run faster and with greater agility. However, it comes at the cost of stability, especially when navigating uneven surfaces. The difference between plantigrade and digitigrade locomotion highlights the evolutionary adaptations that different species have developed in response to their environments.Moreover, the plantigrade stance plays a significant role in the energy efficiency of movement. Studies have shown that walking on the soles of the feet allows for better energy conservation over long distances. This is particularly important for animals that need to cover large areas in search of food or mates. For example, human beings, as plantigrade walkers, have evolved to be endurance runners, capable of traveling long distances to hunt or gather resources.Another interesting aspect of plantigrade locomotion is its impact on behavior and social structures among animals. In species like bears, the ability to walk quietly on flat feet allows them to approach prey without being detected easily. This stealth can be a crucial advantage in their hunting strategies. Additionally, the social interactions among plantigrade animals can differ significantly from those of digitigrade animals. For instance, the upright posture of humans has led to complex social behaviors and communication methods that are unique to our species.In conclusion, the concept of plantigrade locomotion encompasses more than just the way animals walk; it reflects a range of adaptations that influence their survival, behavior, and social interactions. By studying the characteristics of plantigrade animals, we gain insights into the evolutionary processes that shape the diversity of life on our planet. Understanding these adaptations not only enriches our knowledge of biology but also deepens our appreciation for the intricate relationships between organisms and their environments.

“plantigrade”这个词指的是一种动物在行走时脚掌着地的运动方式，与仅用脚趾或脚的其他部分行走相对。这种特征可以在包括人类、熊和一些灵长类动物在内的各种哺乳动物中观察到。理解成为plantigrade的含义对于理解这些动物如何移动以及如何与其环境互动至关重要。首先，plantigrade动物具有独特的骨骼结构，支持它们的运动方式。例如，在人类身上，脚和脚踝的骨骼设计使得体重能够均匀地分布在整个脚上。这种设计使我们能够直立行走，提供稳定性和平衡性。类似地，熊也是plantigrade动物，它们的大而平的脚有助于在行走时有效分配体重。这种适应对于它们的生存至关重要，使它们能够在从森林到山脉的多样地形中穿行。相比之下，许多其他动物，如猫和狗，被归类为趾行动物（digitigrade），意味着它们用脚趾行走。这种运动方式使它们能够更快地奔跑并具有更大的灵活性。然而，这也带来了稳定性上的代价，尤其是在不平坦的表面上行走时。plantigrade和趾行的运动差异突显了不同物种在应对其环境时所发展出的进化适应。此外，plantigrade姿势对运动的能量效率也起着重要作用。研究表明，用脚掌行走可以在长距离行走中更好地节省能量。这对于需要在寻找食物或伴侣时覆盖大面积的动物尤为重要。例如，人类作为plantigrade的行走者，已经进化为耐力跑者，能够长途跋涉以捕猎或收集资源。另一个有趣的方面是plantigrade运动对动物行为和社会结构的影响。在像熊这样的物种中，能够安静地用平脚行走使它们能够在不被发现的情况下接近猎物。这种隐蔽性在它们的狩猎策略中可能是一个关键优势。此外，plantigrade动物之间的社会互动与趾行动物的互动可能显著不同。例如，人类的直立姿势导致了复杂的社会行为和交流方式，这些都是我们物种独有的。总之，plantigrade运动的概念不仅仅涵盖了动物行走的方式；它反映了一系列影响它们生存、行为和社会互动的适应。通过研究plantigrade动物的特征，我们获得了对塑造我们星球生命多样性的进化过程的见解。理解这些适应不仅丰富了我们对生物学的知识，也加深了我们对生物体与其环境之间复杂关系的欣赏。