crustacean

简明释义

英[krʌˈsteɪʃ(ə)n]美[krʌˈsteɪʃn]

n. 甲壳纲动物

复 数 c r u s t a c e a n s

英英释义

单词用法

同义词

反义词

例句

1.The extremely rare coloring means this crustacean isn't headed for the dinner table, but in an aquarium for all to see.

由于它的颜色及其的罕见，所以这只甲壳动物不会成为人们的盘中餐，但会放到海洋馆供人们欣赏。

2.The remains of an ancient isopod were unearthed - a form of crustacean like a large Marine woodlouse.

一个古代等脚累动物的化石余下部分还被埋在土下——一部分看起来像巨大的海洋鳖类。

3.Haemocytes play important roles in crustacean immune responses.

血细胞在甲壳动物的免疫系统中具有重要作用。

4.These skeletal remains from creatures such as molluscs, crustacean and foraminifera create a pearly white sand beach.

海洋生物的骨骼残骸，比如软体动物、甲壳纲动物、有孔虫类使得海滩成为珍珠的白色。

5.Glucosamine can help to synthesize chitin in crustacean shells, which AIDS growth.

葡萄糖氨是甲壳类动物帮助壳中几丁质的生成，可促进生长。

6.The birds' color arises from carotenoid pigments in their algae-and-crustacean diet, often supplemented in captivity.

该鸟的颜色来自于它们摄取的单细胞藻类及甲壳类动物中的胡萝卜素，被圈养后则吃得更多。

7.After a dozen years, the crustacean will grow to the size of a tractor tire.

十几年后，这种甲壳纲动物将长到拖拉机轮胎大小。

8.Some kinds of penguins eat a small shrimp-like crustacean called krill.

一些种类的企鹅吃小的甲壳类的类虾——磷虾。

9.Shrimp is a popular crustacean used in many cuisines around the world.

虾是一种在世界各地许多菜肴中使用的受欢迎的甲壳类动物。

10.The crustacean is a vital part of the ocean ecosystem.

这种甲壳类动物是海洋生态系统的重要组成部分。

11.The crustacean shell provides protection against predators.

这甲壳类动物的外壳可以保护它免受捕食者的攻击。

12.Scientists study crustaceans to understand marine biodiversity.

科学家研究甲壳类动物以了解海洋生物多样性。

13.Lobsters are a type of crustacean that many people enjoy eating.

龙虾是一种许多人喜欢吃的甲壳类动物。

作文

The world of marine life is incredibly diverse, and among the many fascinating creatures that inhabit our oceans, crustaceans stand out for their unique characteristics and ecological significance. Crustaceans are a class of arthropods that include species such as crabs, lobsters, shrimp, and barnacles. These creatures are known for their hard exoskeletons, which provide protection and support, allowing them to thrive in various aquatic environments. The study of crustaceans is not only important for understanding marine ecosystems but also for appreciating the role they play in human culture and economy.One of the most interesting aspects of crustaceans is their incredible adaptability. They can be found in nearly every aquatic habitat, from the deepest parts of the ocean to freshwater rivers and streams. This adaptability is largely due to their ability to regulate their body temperature and salinity levels, enabling them to survive in fluctuating environmental conditions. For instance, the blue crab, a popular seafood delicacy, thrives in brackish waters where saltwater and freshwater mix, showcasing the remarkable versatility of crustaceans.In addition to their adaptability, crustaceans play a crucial role in the marine food web. They serve as a primary food source for a variety of animals, including fish, birds, and mammals. For example, many species of fish rely heavily on crustaceans for their diet, making these creatures essential for maintaining healthy fish populations. Furthermore, crustaceans contribute to the overall health of marine ecosystems by participating in nutrient cycling and helping to break down organic matter.From an economic perspective, crustaceans are invaluable to many coastal communities around the world. The fishing industry heavily relies on the harvesting of crustaceans for food, providing livelihoods for millions of people. Lobster fishing, for instance, is a significant economic activity in regions like Maine, where the demand for this delicacy continues to grow. Additionally, crustaceans are not only consumed directly but are also used in various products, including fertilizers and animal feed, further emphasizing their importance in human economies.Despite their many benefits, crustaceans face numerous threats due to human activities. Overfishing, habitat destruction, and pollution have led to declining populations of several crustacean species, raising concerns about their sustainability. Conservation efforts are essential to protect these vital creatures and ensure that they continue to thrive in their natural habitats. Initiatives such as establishing marine protected areas and implementing sustainable fishing practices can help mitigate the impact of human activities on crustaceans and their ecosystems.In conclusion, crustaceans are remarkable organisms that play a significant role in marine ecosystems, human economies, and cultural practices. Their adaptability, ecological importance, and economic value make them a fascinating subject of study and conservation. As we continue to explore the mysteries of the ocean, it is crucial to recognize the importance of crustaceans and take action to protect their populations for future generations. By promoting sustainable practices and increasing awareness of their significance, we can ensure that these incredible creatures remain a vibrant part of our planet's biodiversity.

海洋生物的世界是极其多样化的，在栖息于我们海洋中的许多迷人生物中，甲壳类动物因其独特的特征和生态重要性而脱颖而出。甲壳类动物是节肢动物的一类，包括螃蟹、龙虾、虾和藤壶等物种。这些生物以其坚硬的外骨骼而闻名，外骨骼提供保护和支撑，使它们能够在各种水生环境中繁衍生息。研究甲壳类动物不仅对理解海洋生态系统至关重要，还对欣赏它们在人类文化和经济中的作用有着重要意义。甲壳类动物最有趣的一个方面是它们令人难以置信的适应能力。它们几乎可以在每个水生栖息地中找到，从海洋最深处到淡水河流和溪流。这种适应能力在很大程度上归功于它们调节体温和盐度水平的能力，使它们能够在波动的环境条件下生存。例如，蓝蟹是一种受欢迎的海鲜美食，能够在咸淡水交汇的地方繁衍生息，展示了甲壳类动物的非凡多样性。除了适应能力外，甲壳类动物在海洋食物链中也发挥着至关重要的作用。它们是多种动物的主要食物来源，包括鱼类、鸟类和哺乳动物。例如，许多鱼类物种在饮食中严重依赖甲壳类动物，使这些生物对维持健康的鱼类种群至关重要。此外，甲壳类动物通过参与养分循环和帮助分解有机物质，进一步促进了海洋生态系统的整体健康。从经济角度来看，甲壳类动物对世界各地的许多沿海社区来说是无价的。渔业行业在很大程度上依赖于捕捞甲壳类动物作为食物，为数百万人的生计提供支持。例如，龙虾捕捞在缅因州等地区是一项重要的经济活动，随着这种美食需求的不断增长，其重要性愈加凸显。此外，甲壳类动物不仅被直接消费，还用于各种产品，包括肥料和动物饲料，进一步强调了它们在人类经济中的重要性。尽管有许多好处，甲壳类动物由于人类活动面临着诸多威胁。过度捕捞、生境破坏和污染导致几种甲壳类动物种群数量下降，引发了对其可持续性的担忧。保护措施对于保护这些重要生物并确保它们在自然栖息地中继续繁衍生息至关重要。建立海洋保护区和实施可持续捕捞实践等倡议可以帮助减轻人类活动对甲壳类动物及其生态系统的影响。总之，甲壳类动物是非凡的生物，在海洋生态系统、人类经济和文化实践中发挥着重要作用。它们的适应能力、生态重要性和经济价值使它们成为一个迷人的研究和保护对象。随着我们继续探索海洋的奥秘，至关重要的是认识到甲壳类动物的重要性，并采取行动保护它们的种群，以便为后代保留这些令人惊叹的生物。通过推动可持续实践和增强对其重要性的认识，我们可以确保这些令人难以置信的生物继续成为我们星球生物多样性的重要组成部分。