pupa

简明释义

英[ˈpjuːpə]美[ˈpjuːpə]

n. [昆] 蛹

n. （Pupa）（意）普帕（人名）

复 数 p u p a e 或 p u p a s

英英释义

单词用法

同义词

反义词

例句

1.When the last time stretching hands and feet, I heard, purple fall pupa River in the spring.

当最后一次手脚伸展，我听见，紫色的蛹滑落在春天的河畔。

2.Silent transformation in the way , the pupa into a butterfly.

在无声之中蜕变，蛹变成蝴蝶。

3.Later the larva turns into a pupa.

接着幼虫变成了蛹。

4.Look at me the pupa forward.

朝我所向往的化蛹前进。

5.It over-wintered with the pupa in fallen leaves or the weeds of ground.

以蛹在向阳地的残株落叶或杂草中越冬。

6.The scouring, dyeing and finishing process of the pupa protein rayon filament knitted fabric are introduced.

重点介绍了蛹蛋白粘胶长丝针织物的精练、染色及后整理加工工艺。

7.In their pupa stage, they resemble broken twigs.

在蛹的阶段，它们象断开的小枝条。

8.The results show that the major portion of pupa crust is composed of fat, protein, chitin and inorganic salts.

研究结果表明，柞蚕蛹皮的主要成分为油脂、蛋白质、几丁质和无机盐。

9.The caterpillar eventually transforms into a pupa after several molts.

毛虫经过几次蜕皮后最终变成了蛹。

10.During the pupa stage, the insect undergoes significant changes.

在蛹阶段，昆虫经历了重大变化。

11.The pupa is often found hidden in a protective cocoon.

通常可以在保护性的茧中找到蛹。

12.Scientists study the pupa to understand the metamorphosis process.

科学家研究蛹以理解变态过程。

13.Some species of butterflies have a brightly colored pupa.

一些蝴蝶的蛹颜色鲜艳。

作文

The life cycle of insects is a fascinating subject that captivates both scientists and nature enthusiasts alike. Among the various stages of an insect's development, the stage known as pupa plays a crucial role in the transformation from larva to adult. During this phase, the insect undergoes significant changes that prepare it for its future life. The pupa stage is often characterized by a period of dormancy where the insect is encased in a protective shell. This cocoon or chrysalis serves as a safe haven, shielding the developing insect from predators and environmental hazards. In many species, the pupa is not only a time of physical transformation but also a period of metabolic reorganization. For instance, caterpillars, which are the larval stage of butterflies, enter the pupa stage after feeding voraciously on leaves. Once they find a suitable place, they attach themselves securely and shed their skin to reveal the pupa. Inside this protective casing, the caterpillar’s body is broken down, and new structures are formed, including wings and reproductive organs. This metamorphosis is not just a biological process; it is also an incredible demonstration of nature's complexity and beauty. The pupa stage can last from a few days to several months, depending on the species and environmental conditions. For example, the pupa of a monarch butterfly takes about ten days to emerge as a fully developed adult, while some beetles may remain in the pupa stage for years before emerging. The significance of the pupa stage extends beyond individual insects; it plays a vital role in the ecosystem. Adult insects often contribute to pollination, pest control, and serving as food for other animals. By understanding the pupa stage, researchers can gain insights into the health of ecosystems and biodiversity. Conservation efforts often focus on protecting habitats that support the entire life cycle of insects, including the critical pupa stage. In conclusion, the pupa stage is a remarkable aspect of insect life cycles that highlights the intricate processes of transformation and adaptation. As we continue to study these fascinating creatures, we deepen our appreciation for the natural world and the delicate balance that sustains it. Understanding the importance of the pupa not only enriches our knowledge of biology but also emphasizes the need for conservation efforts to protect these vital organisms and their habitats.

昆虫的生命周期是一个迷人的主题，吸引着科学家和自然爱好者。在昆虫发展的各个阶段中，被称为蛹的阶段在从幼虫到成虫的转变中发挥着至关重要的作用。在这一阶段，昆虫经历了显著的变化，为其未来的生活做好准备。蛹阶段通常以一种休眠期为特征，昆虫被包裹在一个保护壳内。这种茧或蛹为发育中的昆虫提供了一个安全的庇护所，保护它免受捕食者和环境危害。 在许多物种中，蛹不仅是身体转变的时期，也是代谢重组的阶段。例如，毛虫是蝴蝶的幼虫阶段，它们在贪婪地啃食叶子后进入蛹阶段。一旦找到合适的地方，它们就会牢牢附着，并蜕去皮肤，露出蛹。在这个保护壳内，毛虫的身体被分解，并形成新的结构，包括翅膀和生殖器官。 这种变态不仅是一个生物过程；它也是自然复杂性和美丽的令人难以置信的展示。蛹阶段可以持续几天到几个月，具体取决于物种和环境条件。例如，帝王蝶的蛹大约需要十天才能作为完全发育的成虫出现，而某些甲虫可能在蛹阶段待上数年才会出现。 蛹阶段的重要性超越了单个昆虫；它在生态系统中发挥着至关重要的作用。成虫昆虫常常有助于授粉、控制害虫，并作为其他动物的食物。通过理解蛹阶段，研究人员可以深入了解生态系统和生物多样性的健康状况。保护工作往往侧重于保护支持昆虫整个生命周期的栖息地，包括关键的蛹阶段。 总之，蛹阶段是昆虫生命周期的一个显著方面，突显了转变和适应的复杂过程。随着我们继续研究这些迷人的生物，我们加深了对自然界及其维持的微妙平衡的欣赏。理解蛹的重要性不仅丰富了我们的生物学知识，也强调了保护这些重要生物及其栖息地的必要性。