ascidians

简明释义

英[əˈsɪdɪənz]美[əˈsɪdiənz]

n. 海鞘（ascidian 的复数形式）；海鞘类

英英释义

单词用法

同义词

反义词

例句

1.Objective to confirm the effectiveness of ascidians on diabetes and to probe into its functional mechanism.

目的证实海鞘治疗糖尿病的有效性以及探讨其作用机制。

2.Objective to confirm the effectiveness of ascidians on diabetes and to probe into its functional mechanism.

目的证实海鞘治疗糖尿病的有效性以及探讨其作用机制。

3.The chemistry of ascidians has become one of the most active fields of marine natural products.

海鞘的生理活性物质是海洋天然产物化学中引人注目的研究领域之一。

4.In some regions, ascidians (海鞘) are considered a delicacy and are harvested for consumption.

在一些地区，ascidians（海鞘）被视为美味佳肴，被捕捞用于食用。

5.The marine biologist studied the behavior of ascidians (海鞘) in their natural habitat.

这位海洋生物学家研究了ascidians（海鞘）在其自然栖息地中的行为。

6.Some species of ascidians (海鞘) have the ability to regenerate lost body parts.

某些种类的ascidians（海鞘）具有再生失去的身体部位的能力。

7.Researchers found that ascidians (海鞘) can filter large amounts of seawater, making them important for marine ecosystems.

研究人员发现ascidians（海鞘）能够过滤大量海水，这使它们在海洋生态系统中非常重要。

8.The presence of ascidians (海鞘) can indicate the health of a marine environment.

ascidians（海鞘）的存在可以表明海洋环境的健康状况。

作文

In the vast world of marine biology, there exists a fascinating group of organisms known as ascidians. These simple yet intriguing creatures are often overlooked due to their unassuming appearance. Ascidians, or in Chinese, 海鞘, are marine invertebrates that belong to the class Ascidiacea within the phylum Chordata. They are commonly referred to as sea squirts because of their unique ability to expel water from their bodies when disturbed. This characteristic not only serves as a defense mechanism but also aids in their feeding process.Ascidians can be found in various marine environments, from shallow coastal waters to the depths of the ocean. They typically attach themselves to hard substrates such as rocks, shells, or even other marine organisms. Their body structure is quite simple; they possess a sac-like form with two openings, known as siphons, through which water flows in and out. As water passes through their bodies, ascidians filter out tiny food particles, including plankton and organic matter, providing them with essential nutrients for survival.One of the most remarkable aspects of ascidians is their life cycle. These organisms undergo a complex transformation from a free-swimming larval stage to a sessile adult form. The larvae possess a notochord, a defining characteristic of chordates, which allows them to swim freely in the ocean. However, once they settle on a substrate, they undergo metamorphosis, losing their tail and notochord, and become the adult form we recognize as ascidians. This transition highlights the incredible adaptability of these creatures to their environment.Despite their simplicity, ascidians play a crucial role in marine ecosystems. They act as filter feeders, helping to maintain water quality by removing suspended particles. Additionally, they provide habitat and food for various marine species, contributing to the overall biodiversity of their surroundings. Some species of ascidians even have symbiotic relationships with algae, which can enhance their nutritional intake through photosynthesis.Research into ascidians has also revealed their potential benefits to humans. Scientists are studying certain compounds found in these organisms for their medicinal properties, particularly in cancer research and antibiotic development. The unique biochemical properties of ascidians could lead to breakthroughs in pharmaceuticals, making them an important subject of study in the field of biomedicine.In conclusion, ascidians are more than just simple marine animals; they are vital components of ocean ecosystems and hold significant promise for scientific research. Understanding these organisms helps us appreciate the complexity and interconnectedness of marine life. As we continue to explore our oceans, it is essential to recognize the importance of preserving habitats where ascidians and other marine species thrive. By doing so, we not only protect these fascinating creatures but also ensure the health of our planet's oceans for future generations.

在广阔的海洋生物学世界中，有一群迷人的生物被称为海鞘。由于它们不起眼的外观，这些简单而有趣的生物常常被忽视。海鞘，属于脊索动物门中的海鞘纲，是一种海洋无脊椎动物。由于其独特的能力，当受到干扰时，它们会从身体中喷出水，因此通常被称为海蛰。这一特征不仅作为防御机制，还帮助它们进行捕食。海鞘可以在各种海洋环境中找到，从浅海沿岸到深海。它们通常附着在岩石、贝壳或其他海洋生物等坚硬基质上。它们的身体结构非常简单；它们具有囊状形态，带有两个开口，称为虹吸管，水通过这些开口进出。当水流过它们的身体时，海鞘过滤出微小的食物颗粒，包括浮游生物和有机物，为生存提供必要的营养。海鞘最引人注目的方面之一是它们的生命周期。这些生物从自由游动的幼虫阶段到固定生活的成年形式经历了复杂的转变。幼虫具有脊索，这是脊索动物的一个决定性特征，使它们能够在海洋中自由游动。然而，一旦它们附着在基质上，就会经历变态，失去尾巴和脊索，变成我们所认知的成年海鞘。这一转变突显了这些生物对环境的惊人适应能力。尽管它们很简单，海鞘在海洋生态系统中发挥着至关重要的作用。它们作为滤食者，有助于通过去除悬浮颗粒来维持水质。此外，它们为各种海洋物种提供栖息地和食物，促进周围环境的整体生物多样性。一些海鞘物种甚至与藻类形成共生关系，通过光合作用增强它们的营养摄入。对海鞘的研究还揭示了它们对人类潜在的好处。科学家正在研究这些生物中发现的某些化合物，以探讨其药用特性，尤其是在癌症研究和抗生素开发方面。海鞘的独特生化特性可能导致制药领域的突破，使它们成为生物医学研究的重要对象。总之，海鞘不仅仅是简单的海洋动物；它们是海洋生态系统的重要组成部分，并且在科学研究中具有重要的潜力。理解这些生物有助于我们欣赏海洋生命的复杂性和相互联系。随着我们继续探索海洋，认识到保护海鞘及其他海洋物种繁衍栖息地的重要性至关重要。通过这样做，我们不仅保护了这些迷人的生物，还确保了我们星球海洋的健康，为子孙后代创造美好的未来。