roundworm

简明释义

英[ˈraʊndwɜːm]美[ˈraʊndwɜːrm]

n. 蛔虫

复 数 r o u n d w o r m s

英英释义

单词用法

同义词

反义词

例句

1.Nematodes, hookworm, roundworm, worms, insects and mites are driven to kill effect.

对线虫、钩虫、蛔虫、蠕虫、昆虫和螨虫均有驱杀作用。

2.The two organisms used in this study, the single-celled budding yeast and the roundworm C. elegans, are commonly used models for aging research.

在这项研究中用的两种生物，单细胞芽殖酵母和秀丽隐杆线虫，是研究老化过程的常用模式。

3.It's an atlas of the distribution and prevalence of helminth diseases, including roundworm, hookworm, and whipworm.

这是一个寄生虫疾病分布和预防的图集，其中包括了蛔虫、钩虫和鞭虫。

4.Iit can be used to against hook worms, roundworm, pinworm, whipworm, Strongyloides stercoralis and other intestinal parasites.

它可用于防治勾虫、蛔虫、蛲虫、鞭虫、粪类圆线虫等肠道寄生虫病。

5.The biologist Sydney Brenner chose the roundworm as an experimental animal in 1974 with this goal in mind.

1974年生物学家西德尼·布雷纳把蛔虫选作实验对象时就有这个目标。

6.Hookworm infection is not found in these children. The rate of roundworm infection is 39. 4 %, but it is not the risk factor.

调查儿童中未发现钩虫感染，蛔虫感染率39.4%，但并非缺铁的危险因素。

7.The veterinarian diagnosed the dog with a roundworm 蛔虫 infection.

兽医诊断出这只狗感染了蛔虫。

8.Children are often at risk of contracting roundworms 蛔虫 from contaminated soil.

儿童常常因接触污染土壤而有感染蛔虫的风险。

9.A common symptom of a roundworm 蛔虫 infection is abdominal pain.

感染蛔虫的一个常见症状是腹痛。

10.To prevent roundworm 蛔虫 infections, it's important to wash hands regularly.

为了预防感染蛔虫，定期洗手非常重要。

11.The doctor prescribed medication to treat the roundworm 蛔虫 infestation.

医生开了药物来治疗蛔虫感染。

作文

The world of parasites is vast and complex, with many different organisms that can affect both animals and humans. Among these, the roundworm (线虫) stands out as one of the most common and well-known types of parasitic worms. These elongated, cylindrical creatures can be found in a variety of environments, including soil, water, and within the bodies of their hosts. Understanding the biology and impact of roundworms is essential for both public health and environmental science. Roundworms belong to the phylum Nematoda and are characterized by their smooth, round bodies, which can range in size from a few millimeters to several meters long. They have a simple body structure, lacking a segmented body like other worms such as earthworms. Instead, they possess a complete digestive system, which allows them to consume nutrients efficiently from their hosts or surrounding environment. One of the most significant aspects of roundworms is their reproductive capability. A single female roundworm can produce thousands of eggs in her lifetime, leading to rapid population growth. This high reproductive rate contributes to their success as parasites. Many species of roundworms can infect humans, with Ascaris lumbricoides being one of the most prevalent. This particular species can cause ascariasis, a disease that affects millions of people worldwide, especially in areas with poor sanitation. The life cycle of a roundworm is fascinating and complex. Typically, the eggs are excreted in the feces of an infected host and can survive in the environment for long periods. When ingested by a new host, the eggs hatch into larvae, which then migrate through the host's body, eventually settling in the intestines where they mature into adult worms. This process not only highlights the resilience of roundworms but also their ability to adapt to various environments and hosts. In addition to their impact on human health, roundworms also play a significant role in ecosystems. They contribute to nutrient cycling in the soil, helping to break down organic matter and improve soil fertility. Some species of roundworms are even used in scientific research, particularly in studies related to genetics and developmental biology, due to their simple anatomy and rapid reproduction rates. However, the presence of roundworms in agricultural settings can pose challenges. Crop damage caused by root-knot nematodes, a type of roundworm, can lead to significant economic losses for farmers. Effective management strategies, including crop rotation and the use of resistant plant varieties, are essential to mitigate the impact of these pests. In conclusion, roundworms are a diverse group of organisms with profound implications for health, agriculture, and ecology. Their ability to thrive in various environments and reproduce rapidly makes them successful parasites, while their role in nutrient cycling highlights their ecological importance. By studying roundworms, scientists can gain insights into both the challenges they pose and the benefits they provide, ultimately leading to better management practices and improved understanding of our natural world.

寄生虫的世界是广阔而复杂的，许多不同的生物可以影响动物和人类。在这些生物中，roundworm（线虫）作为最常见和最著名的寄生虫之一脱颖而出。这些细长的圆柱形生物可以在多种环境中找到，包括土壤、水域以及它们宿主的体内。理解roundworm的生物学和影响对于公共健康和环境科学至关重要。 线虫属于线虫门，其特征是光滑、圆形的身体，大小从几毫米到几米不等。它们的身体结构简单，没有像其他蠕虫（如蚯蚓）那样的分段身体。相反，它们具有完整的消化系统，使它们能够有效地从宿主或周围环境中摄取营养。 Roundworm最显著的一个方面是它们的繁殖能力。一只雌性roundworm在其一生中可以产生数千个卵子，导致快速的人口增长。这种高繁殖率有助于它们作为寄生虫的成功。许多种类的roundworm可以感染人类，其中蛔虫（Ascaris lumbricoides）是最常见的。这种特定的物种可以引起蛔虫病，影响全球数百万人，尤其是在卫生条件差的地区。 Roundworm的生命周期非常迷人且复杂。通常，卵子通过感染宿主的粪便排出，并可以在环境中存活很长时间。当被新的宿主吞食后，卵子孵化成幼虫，然后在宿主的体内迁移，最终定居在肠道中成熟为成虫。这个过程不仅突显了roundworm的韧性，还展示了它们适应各种环境和宿主的能力。 除了对人类健康的影响外，roundworm在生态系统中也发挥着重要作用。它们促进土壤中的养分循环，帮助分解有机物质并改善土壤肥力。一些种类的roundworm甚至用于科学研究，特别是在遗传学和发育生物学相关的研究中，因为它们的解剖结构简单且繁殖速度快。 然而，roundworm在农业环境中的存在可能带来挑战。根结线虫（一种roundworm）造成的作物损害可能导致农民的经济损失。有效的管理策略，包括轮作和使用抗病植物品种，对于减轻这些害虫的影响至关重要。 总之，roundworms是一类多样化的生物，对健康、农业和生态有深远的影响。它们在各种环境中生存和快速繁殖的能力使它们成为成功的寄生虫，而它们在养分循环中的作用突显了它们的生态重要性。通过研究roundworms，科学家可以深入了解它们带来的挑战和提供的好处，最终导致更好的管理实践和对自然世界的更深入理解。