predator

简明释义

英[ˈpredətə(r)]美[ˈpredətər]

n. 捕食性动物； 掠夺者，掠夺成性的人（或组织）

复 数 p r e d a t o r s

英英释义

单词用法

同义词

反义词

例句

1.Now let's focus on a specific example of a natural predator that can cause a lot of damage to coral reefs—the Crown of Thorns, or CoT starfish.

现在，让我们来看一个自然捕食者的具体例子，它会对珊瑚礁造成很大的伤害——那就是刺冠海星。

2.For instance, islands often have not been colonized by large predators or are too small to hold feasible predator populations.

例如，岛屿通常没有大型食肉动物的殖民地，或者太小而无法容纳可行的食肉动物种群。

3.This unexpected display of color startles or confuses the predator and provides the would-be prey with an opportunity to escape.

这种意想不到的颜色表现会吓到捕食者或使其迷惑，并为潜在的猎物提供逃跑的机会。

4.What would he have done if attacked by a predator or an invading Klingon?

如果被捕食者或者入侵的克林贡人攻击，他会怎么做？

5.When experimental populations are set up under simple laboratory conditions, the predator often exterminates its prey and then becomes extinct itself, having nothing left to eat.

当实验种群在简单的实验室条件下建立起来时，捕食者往往会消灭它的猎物，然后自己也走向灭绝，因为没有东西可以吃。

6.He found that strongty-lateralised individuals were able to feed twice as fast as wealdy-lateralised ones when there was a threat of a predator looming above them.

他发现，当掠食者的威胁逼近时，强侧化个体的进食速度是弱侧化个体的两倍。

7.In this study, the researchers looked at the high-pitched barks a prairie dog makes when it spots predator.

在这项研究中，研究人员观察了土拨鼠发现捕食者时发出的高音吠叫声。

8.Parasitism is a kind of predator-prey relationship in which one organism, the parasite, derives its food at the expense of its symbiotic associate, the host.

寄生是一种捕食者与被捕食者之间的关系，寄生者利用共生伙伴——宿主来获取食物。

9.The lion is a powerful predator 捕食者 that hunts in the African savannah.

狮子是非洲草原上强大的捕食者。

10.In the ocean, sharks are often seen as the ultimate predator 捕食者 of marine life.

在海洋中，鲨鱼常被视为海洋生物的终极捕食者。

11.The eagle swooped down to catch its predator 猎物 in the field below.

老鹰俯冲下来捕捉下面田野中的猎物。

12.Cheetahs are known for their speed and agility as a land predator 捕食者.

猎豹因其速度和敏捷而闻名，是一种陆地捕食者。

13.Some birds are considered predators 捕食者 because they hunt insects and small animals.

一些鸟类被视为捕食者，因为它们捕猎昆虫和小动物。

作文

In the intricate web of life, every creature plays a vital role in maintaining the balance of ecosystems. Among these roles, the term predator (捕食者) stands out as one of the most fascinating and crucial. A predator is an organism that hunts and feeds on other organisms, known as prey. This relationship is fundamental in nature, influencing population dynamics and contributing to the health of various habitats. The role of a predator is not merely about survival; it is also about regulation. For instance, when a predator preys on herbivores, it helps control their population. This, in turn, prevents overgrazing and allows vegetation to thrive, which benefits other species in the ecosystem. Without predators, certain prey populations could explode, leading to habitat degradation and a decline in biodiversity. Consider the majestic wolves in Yellowstone National Park. Once nearly eradicated from the region, their reintroduction in 1995 showcased the profound impact a predator can have on an ecosystem. As wolves hunted elk, they reduced their numbers, which allowed willow and aspen trees to recover. This recovery led to increased biodiversity, as more birds and other animals returned to the area due to the improved habitat. The presence of the wolf, a top predator, thus demonstrated how essential these creatures are for ecological balance. However, the relationship between predators and prey is complex. It is not just a simple case of one hunting the other; it involves adaptations and counter-adaptations. Prey species often evolve various strategies to evade predators, such as camouflage, speed, and social behaviors like flocking. On the other hand, predators develop enhanced hunting techniques and physical attributes, such as sharp claws or keen eyesight, to improve their hunting success. This ongoing evolutionary arms race is a testament to the dynamic nature of life on Earth. Moreover, the concept of a predator extends beyond the animal kingdom. In human society, we often use the term metaphorically to describe individuals or entities that exploit others for personal gain. For example, in the business world, a company that aggressively undercuts its competitors may be viewed as a predator (捕食者) in the market. This metaphorical usage highlights the darker side of competition and survival instincts, drawing parallels to the natural world. Understanding the role of predators is essential for conservation efforts. Many species of predators are currently endangered due to habitat loss, hunting, and climate change. Protecting these species is critical not only for their survival but also for the health of entire ecosystems. Conservationists emphasize the need to maintain the delicate balance between predators and prey, advocating for measures that support biodiversity and ecological integrity. In conclusion, the term predator (捕食者) encapsulates a vital aspect of ecological relationships. From the majestic wolves of Yellowstone to the intricate dance of life in our own backyards, predators play an indispensable role in sustaining the balance of nature. By understanding and respecting this role, we can better appreciate the complexity of life and the importance of preserving our planet's diverse ecosystems.