arachnids

简明释义

英[əˈræk.nɪdz]美[əˈræk.nɪdz]

n. 蛛形类；蛛形纲（arachnid 的复数）

英英释义

单词用法

同义词

反义词

例句

1.People who suffer from this phobia are extremely ill at ease in places they believe to be infested with arachnids and even though the fear might seem completely irrational to others.

患有这种恐惧症的人会在那些他们自认为有大量蛛形类动物出没的地方焦躁不安，而这种举动在旁人看来是很不可理喻的。

2.An unusual fear caused by spiders and other arachnids like scorpions, triggers this kind of phobia.

一种对于蜘蛛以及蛛形类动物如蝎子的恐怖感是这种恐惧症的来源所在。

3.However, one great service these autumnal arachnids provide is to eat the rest of the creepy crawling squatters in your home - they are particularly fond of clothes moths.

然而，这些秋季的蛛形纲动物提供了一项超乎寻常的服务，那就是吃掉剩余的缓慢爬着并擅自占领你家的蜘蛛——它们特别喜欢衣蛾。

4.Even though they are harmless to humans, the way these tiny predatory arachnids hunt is eerie nonetheless.

尽管它们对人类不会造成伤害，但是这些小小的食肉蜘蛛纲的捕食方式实在是诡异。

5.They can be divided into four smaller groups. These are the myriapods, the arachnids, the crustaceans and the insects.

节肢动物可分成四类，即：多足类、蛛形类、甲壳类和昆虫类。

6.After spending a week learning about insects and arachnids in 7th grade, it became my goal to become an "arthropod expert."

初一那年我们学生物的昆虫纲和蜘蛛纲，一周之后我就立志要做个节肢动物学家。

7.This spider challenges what we thought we knew about arachnids and invertebrates.

狼蛛的这一特性也挑战了人类对蛛形纲动物及无脊椎动物的认知。

8.Many arachnids 蛛形纲动物, such as spiders and scorpions, are found in deserts.

许多蛛形纲动物，如蜘蛛和蝎子，生活在沙漠中。

9.The study of arachnids 蛛形纲动物 is essential for understanding biodiversity.

研究蛛形纲动物对理解生物多样性至关重要。

10.Ticks are arachnids 蛛形纲动物 that can transmit diseases to humans.

蜱虫是可以传播疾病给人类的蛛形纲动物。

11.The venom of certain arachnids 蛛形纲动物 can be dangerous to humans.

某些蛛形纲动物的毒液对人类可能是危险的。

12.Some arachnids 蛛形纲动物 produce silk for building webs.

一些蛛形纲动物会产生丝线来建造网。

作文

The world of nature is filled with a diverse range of creatures, each playing a vital role in the ecosystem. Among these fascinating organisms are the arachnids, a class of joint-legged invertebrates that includes spiders, scorpions, ticks, and mites. Understanding arachnids is essential for appreciating the complexity of our environment. These creatures are often misunderstood and feared, yet they contribute significantly to the balance of nature.Firstly, it is important to recognize that arachnids are not insects. While both groups belong to the phylum Arthropoda, arachnids have distinct characteristics that set them apart. For example, arachnids possess eight legs, unlike insects which have six. Additionally, arachnids typically have two main body segments: the cephalothorax (which combines the head and thorax) and the abdomen. This unique anatomy allows them to thrive in various habitats, from deserts to forests, and even underwater.One of the most well-known arachnids is the spider. Spiders play a crucial role in controlling insect populations, as they are natural predators. By preying on insects, spiders help to maintain ecological balance and reduce the spread of diseases caused by pests. Furthermore, many species of spiders produce silk, which they use to create webs for trapping prey. This silk is not only strong but also has potential applications in medicine and engineering, showcasing the remarkable adaptability of arachnids.Another interesting group within the arachnids is scorpions. Known for their distinctive pincers and venomous stingers, scorpions are often associated with danger. However, they also play an important role in their ecosystems by controlling the populations of other small animals. Scorpions are primarily nocturnal hunters, which allows them to avoid competition with other predators during the day. Their presence in an ecosystem indicates a healthy environment, as they require specific conditions to thrive.Ticks and mites, although less glamorous than spiders and scorpions, are also significant members of the arachnid family. Ticks are known for their role as parasites, feeding on the blood of mammals, birds, and reptiles. While they can transmit diseases such as Lyme disease, they are also a food source for various animals, including birds and amphibians. Mites, on the other hand, can be beneficial or harmful depending on the species. Some mites help decompose organic matter and contribute to soil health, while others may damage crops and plants.In conclusion, arachnids are an integral part of our ecosystem, despite the misconceptions surrounding them. They provide essential services such as pest control and contribute to the food web. By understanding the importance of arachnids, we can foster a greater appreciation for biodiversity and the intricate relationships that exist within nature. It is crucial to educate ourselves and others about these creatures to promote conservation efforts and ensure the health of our ecosystems for future generations. As we continue to explore the wonders of the natural world, let us not forget the vital role that arachnids play in maintaining the delicate balance of life on Earth.

自然界的世界充满了各种各样的生物，每一种生物在生态系统中都扮演着至关重要的角色。在这些迷人的生物中有蛛形纲，它是一个包含蜘蛛、蝎子、蜱虫和螨虫的无脊椎动物类群。理解蛛形纲对于欣赏我们环境的复杂性至关重要。这些生物常常被误解和害怕，但它们对自然的平衡贡献巨大。首先，重要的是要认识到蛛形纲并不是昆虫。虽然这两个群体都属于节肢动物门，但蛛形纲具有将它们与昆虫区分开的独特特征。例如，蛛形纲拥有八条腿，而昆虫只有六条。此外，蛛形纲通常有两个主要的身体部分：头胸部（结合了头部和胸部）和腹部。这种独特的解剖结构使它们能够在各种栖息地中生存，从沙漠到森林，甚至水下。最著名的蛛形纲之一是蜘蛛。蜘蛛在控制昆虫种群方面发挥着至关重要的作用，因为它们是天然捕食者。通过捕食昆虫，蜘蛛帮助维持生态平衡，并减少由害虫传播的疾病。此外，许多蜘蛛种类会产生丝，用于制作捕捉猎物的网。这种丝不仅强韧，还有潜在的医学和工程应用，展示了蛛形纲的非凡适应能力。另一组有趣的蛛形纲成员是蝎子。蝎子以其独特的钳子和有毒的尾刺而闻名，常常与危险联系在一起。然而，它们在生态系统中也扮演着重要角色，通过控制其他小动物的种群来维持生态平衡。蝎子主要是夜间捕猎者，这使得它们在白天避免与其他捕食者的竞争。它们在生态系统中的存在表明环境健康，因为它们需要特定的条件才能生存。蜱虫和螨虫，尽管不如蜘蛛和蝎子那样引人注目，但也是蛛形纲家族的重要成员。蜱虫以寄生虫的身份而闻名，吸取哺乳动物、鸟类和爬行动物的血液。虽然它们可以传播如莱姆病等疾病，但它们也是各种动物（包括鸟类和两栖动物）的食物来源。另一方面，螨虫根据物种的不同，可以是有益或有害的。有些螨虫有助于分解有机物质并促进土壤健康，而其他一些则可能损害农作物和植物。总之，尽管围绕着它们存在误解，蛛形纲是我们生态系统不可或缺的一部分。它们提供诸如害虫控制等基本服务，并对食物链做出贡献。通过理解蛛形纲的重要性，我们可以培养对生物多样性的更大欣赏，以及自然界中存在的复杂关系。教育自己和他人了解这些生物，以促进保护工作并确保我们的生态系统在未来几代人中保持健康，是至关重要的。当我们继续探索自然界的奇迹时，让我们不要忘记蛛形纲在维持地球生命微妙平衡中所扮演的重要角色。