damselfly

简明释义

英[ˈdæmzlflaɪ]美[ˈdæmzlflaɪ]

n. 豆娘（一种蜻蜓）；束翅亚目，蜻蜓目

复 数 d a m s e l f l i e s

英英释义

单词用法

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反义词

例句

1.The researchers determined that in damselfly populations with a high ratio of andromorphs to males, these females evolved more masculine features.

研究人员发现，在andromorphs相对于雄性比率更高的蜻蜓家族中，雌性蜻蜓进化出更多的雄性特征。

2.Angels, putti, dragons and fairies are generally shown with insect wings, often those of damselfly or butterflies.

天使、丘比特、龙和仙女，他们通常具有昆虫一样的翅膀，多数为蝴蝶和豆娘那样的翅膀。

3.The researchers determined that in damselfly populations with a high ratio of andromorphs to males, these females evolved more masculine features.

研究人员发现，在andromorphs相对于雄性比率更高的蜻蜓家族中，雌性蜻蜓进化出更多的雄性特征。

4.The damselfly is a close relative of the dragonfly, but slimmer and daintier than its larger, more powerful cousin.

豆娘是蜻蜓的近亲，蜻蜓的体型较大，强壮，而豆娘体型纤细，小巧精致。

5.The bright colors of the damselfly 豆娘 attracted many photographers in the nature reserve.

在自然保护区，鲜艳的damselfly豆娘吸引了许多摄影师。

6.The damselfly 豆娘 can be found near freshwater sources, where it lays its eggs.

damselfly豆娘通常可以在淡水源附近找到，在那里它们产卵。

7.While hiking near the pond, we spotted a beautiful damselfly 豆娘 perched on a leaf.

在池塘附近徒步旅行时，我们看到一只美丽的damselfly豆娘栖息在叶子上。

8.During our biology class, we studied the life cycle of the damselfly 豆娘 and its role in the ecosystem.

在生物课上，我们学习了damselfly豆娘的生命周期及其在生态系统中的作用。

9.We learned that the damselfly 豆娘 is often mistaken for a dragonfly because of their similar appearance.

我们了解到，damselfly豆娘常常因为外形相似而被误认为是蜻蜓。

作文

In the world of insects, few creatures are as enchanting and delicate as the damselfly. These slender, graceful insects belong to the order Odonata, which also includes their larger relatives, the dragonflies. The damselfly (豆娘) is often found near freshwater habitats such as ponds, lakes, and streams, where they flit gracefully among the reeds and grasses. Their vibrant colors and delicate wings make them a favorite subject for nature enthusiasts and photographers alike.One of the most fascinating aspects of the damselfly is its life cycle. Like all odonates, damselflies undergo incomplete metamorphosis, which means they have three stages: egg, nymph, and adult. The female damselfly lays her eggs in or near water, where they hatch into nymphs. These nymphs live underwater and can remain in this stage for several months to several years, depending on the species and environmental conditions.During their nymph stage, damselflies are voracious predators, feeding on small aquatic insects and even tadpoles. This predatory behavior plays a crucial role in maintaining the balance of the ecosystem in their aquatic environments. As they grow, they molt several times until they are ready to emerge as adults. When the time is right, the nymph climbs out of the water and sheds its skin, transforming into a beautiful adult damselfly.Adult damselflies are known for their unique resting posture. Unlike dragonflies, which hold their wings outstretched, damselflies typically fold their wings alongside their bodies when at rest. This characteristic makes them easily distinguishable from their larger relatives. Additionally, damselflies exhibit a variety of colors and patterns, ranging from bright blues and greens to subtle browns and blacks, making them a stunning sight against the backdrop of their natural habitat.The presence of damselflies in an ecosystem is often an indicator of good water quality. Because they are sensitive to pollution and changes in their environment, a healthy population of damselflies suggests that the aquatic habitat is thriving. This makes them important bioindicators for researchers studying the health of freshwater ecosystems.Moreover, damselflies play a significant role in the food chain. They serve as prey for various birds, fish, and other predators. Their presence contributes to the biodiversity of their habitats and supports the overall health of the ecosystem. As such, protecting the habitats where damselflies thrive is essential for maintaining ecological balance.In conclusion, the damselfly is not just a beautiful insect; it is a vital component of freshwater ecosystems. From its intriguing life cycle to its role as a bioindicator, the damselfly showcases the intricate connections within nature. Observing these delicate creatures in their natural habitat reminds us of the importance of conservation efforts to protect the environments they inhabit. As we continue to explore and appreciate the wonders of the natural world, let us not forget the significance of the damselfly and its contributions to our ecosystems.

在昆虫的世界里，鲜有生物如豆娘般迷人而娇嫩。这些细长而优雅的昆虫属于蜻蜓目，亦包括它们的近亲蜻蜓。豆娘通常出现在淡水栖息地，如池塘、湖泊和溪流附近，在芦苇和草丛中优雅地飞舞。它们鲜艳的色彩和精致的翅膀使其成为自然爱好者和摄影师的最爱。豆娘最迷人的方面之一是它的生命周期。与所有蜻蜓类昆虫一样，豆娘经历不完全变态，这意味着它们有三个阶段：卵、若虫和成虫。雌性豆娘将卵产在水中或附近，卵孵化后变为若虫。这些若虫生活在水下，可能在这个阶段待几个月到几年，具体取决于物种和环境条件。在若虫阶段，豆娘是贪婪的捕食者，以小型水生昆虫甚至蝌蚪为食。这种捕食行为在维持其水生环境生态平衡中发挥着至关重要的作用。随着成长，它们会多次蜕皮，直到准备转变为成虫。当时机成熟时，若虫会爬出水面，蜕去外皮，变成美丽的成虫豆娘。成虫豆娘以其独特的休息姿势而闻名。与蜻蜓不同，蜻蜓在休息时翅膀张开，而豆娘通常将翅膀并拢在身体两侧。这一特征使它们与较大的亲属区分开来。此外，豆娘展现出多种颜色和图案，从明亮的蓝色和绿色到微妙的棕色和黑色，使其在自然栖息地的背景下成为令人惊叹的景象。豆娘的存在往往是水质良好的指标。由于它们对污染和环境变化敏感，健康的豆娘种群表明水生栖息地繁荣。这使得它们成为研究淡水生态系统健康的重要生物指示物。此外，豆娘在食物链中扮演着重要角色。它们是各种鸟类、鱼类和其他捕食者的猎物。它们的存在有助于栖息地的生物多样性，支持生态系统的整体健康。因此，保护豆娘生存的栖息地对于维持生态平衡至关重要。总之，豆娘不仅是一种美丽的昆虫；它是淡水生态系统的重要组成部分。从其引人入胜的生命周期到作为生物指示物的角色，豆娘展示了自然界内复杂的联系。在它们的自然栖息地观察这些娇弱的生物，让我们想起了保护努力的重要性，以保护它们栖息的环境。在继续探索和欣赏自然世界的奇迹时，让我们不要忘记豆娘的重要性及其对生态系统的贡献。