extinct

简明释义

英[ɪkˈstɪŋkt]美[ɪkˈstɪŋkt]

adj. 灭绝的；消亡的；（火山）死的；（贵族称号）无合法继承人的；熄灭了的

英英释义

单词用法

同义词

反义词

例句

1.Humans have an obligation to try to save endangered animals, because it is our fault that they are going extinct.

人类有义务去拯救濒临灭绝的动物，因为它们的灭绝是我们的过错。

2.There's always some guesswork when studying extinct animals.

在研究灭绝的动物时，总要做一些猜测。

3.Indeed, most analysts believe that some kind of environmental degradation underlies the demise of many extinct salmon populations.

事实上，大多数分析家认为某种环境退化是许多已灭绝鲑鱼种群消亡的根源。

4.Geigl and her colleagues looked at 3200-year-old fossil bones belonging to a single individual of an extinct cattle species called an aurochs.

盖格尔和她的同事们研究了3200年前的骨头化石，这些骨头属于一种已经灭绝的叫做欧洲野牛的种类。

5.Scientists are attempting to compare features of extinct animals with living analogues.

科学家正试图把已灭绝动物的特征与现存类似动物相比较。

6.When a species goes extinct, it dramatically changes the landscape of biodiversity.

当一个物种灭绝时，它会极大地改变生物多样性的状况。

7.It is better for the sake of evolution to allow creatures to go extinct.

为了进化，最好让生物灭绝。

8.Whatever the cause, dinosaurs, as well as about half of all species on the planet, went extinct.

不管什么原因，恐龙以及地球上几乎半数以上的物种灭绝了。

9.The dinosaur species was declared extinct due to a catastrophic event.

由于一场灾难性事件，这种恐龙物种被宣告为灭绝。

10.Many believe that the woolly mammoth is extinct because of climate change.

许多人认为，猛犸象因气候变化而灭绝。

11.Conservation efforts are essential to prevent more species from becoming extinct.

保护措施对于防止更多物种灭绝至关重要。

12.The passenger pigeon was once abundant but is now extinct.

旅鸽曾经数量庞大，但现在已经灭绝。

13.Scientists study fossils to learn about species that are now extinct.

科学家研究化石以了解现在已经灭绝的物种。

作文

The concept of species becoming extinct is a pressing issue that has garnered significant attention in recent years. As we delve into the factors contributing to the extinction of various species, it becomes evident that human activities play a crucial role. Deforestation, pollution, climate change, and overfishing are just a few examples of how our actions have led to the decline of numerous animal and plant species. This essay will explore the implications of extinction and the importance of biodiversity for the health of our planet. Firstly, it is essential to understand what it means for a species to be extinct. When a species is declared extinct, it signifies that there are no living individuals left anywhere on Earth. This loss is often irreversible and can have cascading effects on ecosystems. For instance, the dodo bird, which became extinct in the late 17th century, serves as a poignant reminder of how human intervention can disrupt natural balances. The dodo was native to Mauritius and was hunted to extinction due to the arrival of sailors and invasive species that destroyed its habitat. Moreover, the extinction of one species can lead to the decline of others. Ecosystems are intricate webs of interdependent relationships, where each species plays a role. The loss of a predator, for example, can result in an overpopulation of prey species, which may then overconsume vegetation, leading to habitat degradation. This chain reaction illustrates the delicate balance of nature and highlights the necessity of preserving biodiversity. In addition to ecological consequences, the extinction of species poses ethical questions. Many argue that humans have a moral obligation to protect other forms of life. The extinction of a species represents not only the loss of genetic diversity but also the loss of potential benefits that species may provide, such as medicinal resources or ecosystem services. For instance, the Pacific yew tree was once thought to be on the brink of extinction, but it was later discovered that its bark contained compounds crucial for cancer treatment. This case exemplifies the unpredictable value of biodiversity and the importance of conservation efforts. To combat the issue of extinction, various strategies have been implemented worldwide. Conservation programs aim to protect endangered species and their habitats. Establishing protected areas, such as national parks and wildlife reserves, is one approach to safeguarding biodiversity. Additionally, international agreements like the Convention on Biological Diversity seek to promote sustainable practices and prevent further extinction events. Public awareness and education also play vital roles in conservation efforts. By informing communities about the significance of biodiversity and the threats posed by human activities, we can foster a sense of responsibility towards the environment. Engaging individuals in conservation initiatives, such as tree planting or wildlife monitoring, can empower them to take action against extinction. In conclusion, the phenomenon of species becoming extinct is a complex issue that requires urgent attention. The implications of extinction extend beyond individual species, affecting entire ecosystems and human societies. It is imperative that we recognize our role in this crisis and take proactive measures to preserve the rich tapestry of life on our planet. By promoting conservation efforts and raising awareness, we can work towards a future where fewer species face the threat of extinction and where biodiversity thrives.

物种灭绝的概念是一个紧迫的问题，近年来引起了广泛关注。当我们深入探讨导致各种物种灭绝的因素时，我们会发现人类活动在其中发挥了关键作用。森林砍伐、污染、气候变化和过度捕捞只是一些例子，说明我们的行为如何导致众多动物和植物物种的衰退。本文将探讨灭绝的影响以及生物多样性对我们星球健康的重要性。 首先，了解物种被称为灭绝的含义至关重要。当一个物种被宣布为灭绝时，这意味着地球上再也没有任何活着的个体。这种损失往往是不可逆转的，并可能对生态系统产生连锁反应。例如，渡渡鸟在17世纪末灭绝，成为人类干预如何破坏自然平衡的痛苦提醒。渡渡鸟原产于毛里求斯，由于水手的捕猎和破坏其栖息地的入侵物种而被捕杀至灭绝。 此外，一个物种的灭绝可能导致其他物种的衰退。生态系统是错综复杂的相互依存关系网络，其中每个物种都扮演着角色。例如，捕食者的消失可能导致猎物种群的过度繁殖，从而可能过度消耗植被，导致栖息地退化。这一连锁反应说明了自然的微妙平衡，并突显了保护生物多样性的必要性。 除了生态后果，物种的灭绝还提出了伦理问题。许多人认为，人类有道德义务保护其他生命形式。物种的灭绝不仅代表着遗传多样性的丧失，还代表着潜在利益的丧失，例如药用资源或生态系统服务。例如，太平洋紫杉树曾被认为濒临灭绝，但后来发现其树皮中含有对癌症治疗至关重要的化合物。这个案例说明了生物多样性的不可预测价值以及保护努力的重要性。 为了应对灭绝问题，世界各地实施了各种策略。保护计划旨在保护濒危物种及其栖息地。建立保护区，如国家公园和野生动物保护区，是保护生物多样性的一种方法。此外，像生物多样性公约这样的国际协议旨在促进可持续实践，防止进一步的灭绝事件。 公众意识和教育在保护工作中也发挥着至关重要的作用。通过向社区宣传生物多样性的重要性以及人类活动带来的威胁，我们可以培养对环境的责任感。让个人参与保护倡议，例如植树或野生动物监测，可以使他们能够采取行动反对灭绝。 总之，物种灭绝现象是一个复杂的问题，需要紧急关注。灭绝的影响超越了单个物种，影响整个生态系统和人类社会。我们必须认识到自己在这一危机中的角色，并采取积极措施保护我们星球上丰富的生命织锦。通过促进保护努力和提高意识，我们可以朝着一个更少物种面临灭绝威胁且生物多样性蓬勃发展的未来迈进。