locusts

简明释义

英[ˈləʊkəsts]美[ˈloʊkəsts]

n. [植保]蝗虫；[林]洋槐（locust 的复数）

英英释义

单词用法

同义词

反义词

例句

1.But locusts can't swim, so how could it be?

蝗虫不会游泳，因此怎能发生这种情况呢？

2.Wheat had come to nearly monopolize the region, but it was particularly vulnerable to the locusts.

小麦几乎垄断了这个地区，但它特别容易受到蝗虫的攻击。

3.This is definitely not good news for locusts, but the fungus has no effect on other life forms.

这对蝗虫肯定不是一个好消息，然而，真菌对其他生命形式没有影响。

4.The island nation has problems with locusts, insects that can destroy crops and grasslands quickly.

这个岛国遭受了蝗灾，蝗虫能在转瞬之间席卷作物和草原。

5.ONE of the problems about locusts is the unpredictability of their behaviour.

蝗虫的麻烦之一在于他们的行为不可预测性。

6.Australia is also set for a weighty crop, having successfully dealt with a threatened plague of locusts.

由于成功消除了可能发生的蝗虫灾害，澳大利亚也将要丰收沉甸甸的粮食。

7.These crops are attacked by locusts.

这些庄稼遭到蝗灾。

8.Sometimes it is more deadly and destructive than a swarm of locusts.

有时它比成群的蝗虫更加致命，更具破坏力。

9.One possibility is the tendency of young locusts to eat one another.

一个可能性是幼虫之间互食行为的倾向。

10.The farmer was worried about the invasion of locusts because they could destroy his crops.

农民担心蝗虫的入侵，因为它们可能会摧毁他的农作物。

11.During the summer, swarms of locusts can be seen flying over the fields.

在夏季，成群的蝗虫可以看到飞过田地。

12.In some regions, locusts are considered a delicacy and are eaten fried or roasted.

在一些地区，蝗虫被视为美味，可以油炸或烤着吃。

13.The government issued a warning about the potential damage caused by locusts this season.

政府发布了关于本季可能造成的蝗虫损害的警告。

14.Farmers often use pesticides to control the population of locusts in their fields.

农民们常常使用农药来控制田地中蝗虫的数量。

作文

The world of nature is filled with fascinating creatures, but few are as notorious as the locusts (蝗虫). These insects belong to the family of grasshoppers and are known for their ability to form large swarms that can devastate crops and vegetation. The phenomenon of locusts swarming is not only a natural marvel but also an ecological disaster that has significant implications for agriculture and food security. In this essay, we will explore the life cycle of locusts, their behavior, and the impact they have on human society. The life cycle of locusts begins with eggs laid in the ground. When conditions are favorable, these eggs hatch into nymphs, which resemble miniature adults. As they grow, they undergo several molts, shedding their exoskeletons until they reach maturity. What makes locusts particularly interesting is their ability to change behavior and physiology when population densities are high. This transformation leads them to become gregarious, forming large swarms that can travel vast distances in search of food. One of the most striking features of locusts is their capacity to consume enormous quantities of vegetation. A single swarm can contain billions of locusts, and together they can eat enough crops to feed millions of people. This voracious appetite poses a significant threat to farmers, especially in regions where agriculture is the backbone of the economy. Countries in Africa, the Middle East, and parts of Asia often face the brunt of locust invasions, leading to food shortages and economic instability. Historically, locusts have been the cause of famine and hardship. For instance, the 2019-2020 desert locust outbreak in East Africa was one of the worst in decades, affecting countries like Ethiopia, Kenya, and Somalia. Millions of people were at risk of hunger as swarms destroyed crops and pastures. Governments and international organizations had to mobilize resources to combat the invasion, employing pesticides and other control measures to protect food supplies. In addition to their direct impact on agriculture, locusts also influence ecosystems. Their feeding habits can alter plant communities, affecting biodiversity and the balance of local ecosystems. While they play a role in nutrient cycling by breaking down plants, their sudden population explosions can lead to long-term ecological consequences. Despite their destructive nature, locusts also hold a place in various cultures and traditions. In some societies, they are considered a delicacy and are consumed as food. Their presence in literature and folklore often symbolizes destruction and chaos, reflecting humanity's complex relationship with these insects. To mitigate the impact of locusts, researchers are studying their behavior and developing innovative control methods. Early warning systems based on satellite imagery and weather patterns are being implemented to predict swarming events. Additionally, sustainable agricultural practices are being promoted to enhance resilience against locust invasions. In conclusion, the study of locusts reveals much about the delicate interplay between nature and human society. While they are often seen as pests that threaten food security, understanding their biology and behavior can help us find ways to coexist with them. By improving our agricultural practices and investing in research, we can better prepare for the challenges posed by locusts and protect our food systems for future generations.

自然界充满了迷人的生物，但很少有像locusts（蝗虫）一样臭名昭著。这些昆虫属于蚱蜢家族，以其形成大型虫群并摧毁作物和植被的能力而闻名。locusts（蝗虫）成群的现象不仅是自然奇观，也是生态灾难，对农业和粮食安全有重大影响。在这篇文章中，我们将探讨locusts（蝗虫）的生命周期、行为以及它们对人类社会的影响。 locusts（蝗虫）的生命周期始于在地面上产卵。当条件适宜时，这些卵孵化成若虫，外形类似迷你成虫。随着它们的成长，它们经历几次蜕皮，脱掉外骨骼，直到成熟。locusts（蝗虫）最有趣的特点之一是，当种群密度高时，它们能够改变行为和生理。这种转变使它们变得群居，形成可以在寻找食物时横跨广阔距离的大型虫群。 locusts（蝗虫）最引人注目的特征之一是它们消耗大量植物的能力。一群虫子可能包含数十亿只locusts（蝗虫），它们可以一起吃掉足够供养数百万人的作物。这种贪婪的食欲对农民构成了重大威胁，尤其是在农业是经济支柱的地区。非洲、中东和部分亚洲的国家经常遭受locusts（蝗虫）的侵袭，导致粮食短缺和经济不稳定。 历史上，locusts（蝗虫）曾是饥荒和困难的根源。例如，2019-2020年东非沙漠locusts（蝗虫）爆发是几十年来最严重的之一，影响了埃塞俄比亚、肯尼亚和索马里等国。数百万人面临饥饿风险，因为虫群摧毁了作物和牧草。各国政府和国际组织不得不动员资源来应对这一侵袭，采取农药和其他控制措施以保护粮食供应。 除了对农业的直接影响，locusts（蝗虫）还会影响生态系统。它们的取食习惯可以改变植物群落，影响生物多样性和当地生态系统的平衡。虽然它们通过分解植物在养分循环中发挥作用，但它们的突然数量激增可能导致长期的生态后果。 尽管它们具有破坏性，locusts（蝗虫）在各种文化和传统中也占有一席之地。在一些社会中，它们被视为美味佳肴，被作为食物消费。它们在文学和民间传说中的存在常常象征着毁灭和混乱，反映了人类与这些昆虫之间复杂的关系。 为了减轻locusts（蝗虫）的影响，研究人员正在研究它们的行为并开发创新的控制方法。基于卫星图像和天气模式的早期预警系统正在实施，以预测虫群事件。此外，正在推广可持续农业实践，以增强对locusts（蝗虫）入侵的抵御能力。 总之，研究locusts（蝗虫）揭示了自然与人类社会之间微妙的相互关系。虽然它们常被视为威胁粮食安全的害虫，但了解它们的生物学和行为可以帮助我们找到与它们共存的方法。通过改善我们的农业实践和投资研究，我们可以更好地为locusts（蝗虫）带来的挑战做好准备，并保护我们未来几代人的粮食系统。