carnassial

简明释义

英[kɑrˈnæs.i.əl]美[kɑrˈnæs.i.əl]

adj. 食肉的

n. 裂齿

英英释义

单词用法

同义词

反义词

例句

1.They did have the carnassial teeth that distinguish the Carnivora, a pair of sharpened cheek teeth that are aligned so as to work like shears in slicing meat off bone;

它们已经有了食肉动物特有的裂齿，一对尖利的长在面颊部位的牙齿，能象大剪刀一样把肉从骨头上切割下来。

2.They did have the carnassial teeth that distinguish the Carnivora, a pair of sharpened cheek teeth that are aligned so as to work like shears in slicing meat off bone;

它们已经有了食肉动物特有的裂齿，一对尖利的长在面颊部位的牙齿，能象大剪刀一样把肉从骨头上切割下来。

3.Unfortunately, the fourth premolar in the upper jaw is quite large and looks like the first molar in the lower jaw; it is known as a carnassial tooth.

不幸的是，上颚的第四颗前臼齿很大，看起来就象是下颚的第一颗臼齿，这颗前臼齿也被称作叫裂齿。

4.Carnassial: Last premolar of upper jaw, first molar of lower jaw.

裂齿：上颚最后的一只前臼齿，下颚最前的一只臼齿。

5.The wolf's carnassial 肉食齿 teeth are specially adapted for slicing through flesh.

狼的肉食齿牙齿特别适合切割肉类。

6.Cats have well-developed carnassial 肉食齿 that help them effectively catch and consume prey.

猫有发达的肉食齿，帮助它们有效捕捉和消耗猎物。

7.The carnassial 肉食齿 of a hyena is designed to crush bones.

土狼的肉食齿设计用于压碎骨头。

8.Veterinarians often examine the carnassial 肉食齿 of dogs during dental check-ups.

兽医在狗的牙科检查中经常检查肉食齿。

9.The presence of carnassial 肉食齿 in certain mammals indicates a carnivorous diet.

某些哺乳动物中存在肉食齿表明其为肉食性饮食。

作文

In the fascinating world of zoology, the term carnassial refers to a specific type of tooth that is adapted for shearing flesh. These teeth are typically found in carnivorous mammals, such as dogs and cats, and play a crucial role in their ability to consume meat effectively. The structure of carnassial teeth is designed to slice through tough muscle and connective tissue, making them essential for the survival of these predators in the wild. To understand the significance of carnassial teeth, one must first appreciate the dietary needs of carnivorous animals. Unlike herbivores, which have flat molars for grinding plant material, carnivores require sharp, pointed teeth to tear into their prey. The carnassial teeth, usually located in the upper and lower jaws, are particularly well-suited for this task. They work together like scissors, where the upper tooth (the fourth upper premolar) slides past the lower tooth (the first lower molar) to create a powerful cutting action. The evolution of carnassial teeth has allowed carnivorous species to thrive in various environments. For example, wolves utilize their carnassial teeth to hunt and consume large ungulates, while domestic cats use theirs to catch smaller prey such as rodents. The efficiency of these teeth not only aids in feeding but also contributes to the overall health of the animal by ensuring they receive the necessary nutrients from their diet. Moreover, the presence of carnassial teeth can also be an indicator of an animal's dietary habits when examining fossil records. Paleontologists often study the morphology of ancient species' teeth to infer their feeding behaviors and ecological roles. The development of carnassial teeth in various lineages provides insights into how different carnivorous species adapted to their environments over millions of years. In conclusion, carnassial teeth are a remarkable adaptation that showcases the evolutionary ingenuity of carnivorous mammals. Their unique structure enables these animals to efficiently process meat, which is vital for their survival. Understanding the role of carnassial teeth not only enhances our knowledge of animal physiology but also deepens our appreciation for the complexities of nature's design. As we continue to explore the animal kingdom, the study of features like carnassial teeth will undoubtedly reveal more about the intricate relationships between species and their environments.

在动物学的迷人世界中，术语carnassial指的是一种特定类型的牙齿，适应于切割肉类。这些牙齿通常存在于食肉哺乳动物中，如狗和猫，并在它们有效地消耗肉类方面发挥着至关重要的作用。carnassial牙齿的结构旨在切割坚韧的肌肉和结缔组织，使它们在野外生存中对这些捕食者至关重要。 要理解carnassial牙齿的重要性，首先必须欣赏食肉动物的饮食需求。与具有平坦磨牙用于研磨植物材料的草食动物不同，食肉动物需要尖锐、锋利的牙齿来撕裂猎物。carnassial牙齿通常位于上下颌，特别适合这个任务。它们像剪刀一样协同工作，上面的牙齿（第四上前磨牙）在下面的牙齿（第一下磨牙）旁滑动，形成强大的切割动作。 carnassial牙齿的进化使食肉物种能够在各种环境中繁衍生息。例如，狼利用它们的carnassial牙齿捕猎和消费大型有蹄类动物，而家猫则利用它们捕捉较小的猎物，如啮齿动物。这些牙齿的高效性不仅有助于喂养，还通过确保它们从饮食中获得必要的营养，促进了动物的整体健康。 此外，carnassial牙齿的存在也可以作为动物饮食习惯的指示，尤其是在研究化石记录时。古生物学家通常研究古代物种牙齿的形态，以推断它们的摄食行为和生态角色。不同谱系中carnassial牙齿的发展为我们提供了关于不同食肉物种如何在数百万年中适应其环境的深刻见解。 总之，carnassial牙齿是一个引人注目的适应特征，展示了食肉哺乳动物的进化智慧。它们独特的结构使这些动物能够高效地处理肉类，这是它们生存的关键。理解carnassial牙齿的作用不仅增强了我们对动物生理的了解，也加深了我们对自然设计复杂性的欣赏。随着我们继续探索动物王国，像carnassial牙齿这样的特征研究无疑会揭示出更多关于物种及其环境之间复杂关系的信息。