nonretractable fins

简明释义

固定鳍

英英释义

例句

1.The design of the kayak incorporates nonretractable fins to provide better tracking and speed on open water.

这款皮划艇的设计采用了非可收回鳍，以便在开阔水域上提供更好的航向和速度。

2.The new model of the submarine features advanced nonretractable fins that enhance stability during deep dives.

新型潜艇配备了先进的非可收回鳍，在深潜时增强了稳定性。

3.The fish species is known for its distinctive nonretractable fins, which help it navigate through coral reefs.

这种鱼类以其独特的非可收回鳍而闻名，这帮助它在珊瑚礁中导航。

4.During testing, the nonretractable fins on the prototype were found to significantly reduce drag.

在测试中，原型上的非可收回鳍被发现显著减少了阻力。

5.In aquatic robotics, engineers often utilize nonretractable fins to improve maneuverability in turbulent water.

在水下机器人技术中，工程师们常常使用非可收回鳍来提高在湍流中的机动性。

作文

In the fascinating world of marine biology, the study of fish and their adaptations offers profound insights into how species evolve over time. One particular adaptation that has garnered attention is the presence of nonretractable fins, which are fins that cannot be retracted or folded back against the body. This characteristic can significantly influence a fish's swimming capabilities, maneuverability, and overall survival in its aquatic environment. Understanding the role of nonretractable fins is essential for both scientists and enthusiasts alike, as it sheds light on the complex interplay between anatomy and ecology.Fish with nonretractable fins often exhibit unique swimming patterns that allow them to navigate through various underwater terrains. For instance, species such as the angelfish and certain types of rays possess these fixed fins, which provide stability and control while swimming. Unlike fish with retractable fins, which can adjust their fin position for different swimming speeds or styles, those with nonretractable fins rely on their structural design to adapt to their surroundings. This can be particularly advantageous in environments where quick turns and agile movements are necessary to evade predators or catch prey.Moreover, the morphology of nonretractable fins can vary widely among different species, reflecting their specific ecological niches. For example, some fish have long, slender fins that enhance their ability to glide through the water, while others may have broader, more robust fins that provide greater thrust. The diversity in fin structure not only illustrates the adaptability of fish but also emphasizes the importance of these features in their evolutionary success.In addition to aiding in locomotion, nonretractable fins play a crucial role in communication and mating behaviors. Many species utilize their fins to display dominance or attract mates, showcasing vibrant colors and intricate patterns that can only be appreciated when the fins are fully extended. This aspect of fin function highlights the multifaceted roles that nonretractable fins serve beyond mere propulsion, contributing to the social dynamics of fish populations.Furthermore, the study of nonretractable fins provides valuable insights into the impact of environmental changes on aquatic life. As habitats are altered due to climate change, pollution, and overfishing, the adaptations that once served fish well may become liabilities. Understanding how fixed fins affect a species' ability to adapt to new conditions is vital for conservation efforts. By studying these adaptations, researchers can better predict which species are at risk and develop strategies to protect them.In conclusion, nonretractable fins represent a remarkable evolutionary adaptation that enhances our understanding of fish biology and ecology. From their role in locomotion to their significance in communication and mating, these fins are integral to the survival of many species. As we continue to explore the complexities of marine life, the study of nonretractable fins will undoubtedly remain a key area of focus, offering insights that extend beyond the ocean and into the broader context of evolutionary biology. The ongoing research into these fascinating structures not only enriches our knowledge but also underscores the importance of preserving the delicate balance of our aquatic ecosystems.

在迷人的海洋生物学世界中，鱼类及其适应性的研究提供了深刻的见解，揭示了物种如何随着时间的推移而进化。一个特别引人注目的适应性特征是存在于某些鱼类身上的非可收回鳍，即无法收回或折叠回身体的鳍。这一特征可以显著影响鱼类的游泳能力、机动性以及在水生环境中的整体生存能力。理解非可收回鳍的作用对科学家和爱好者来说都是至关重要的，因为它揭示了解剖结构与生态之间复杂的相互作用。拥有非可收回鳍的鱼类通常表现出独特的游泳模式，使它们能够在各种水下地形中导航。例如，天使鱼和某些种类的鳐鱼就具有这些固定的鳍，这为游泳提供了稳定性和控制力。与可以调整鳍位置以适应不同游泳速度或风格的鱼类不同，那些拥有非可收回鳍的鱼类依赖于其结构设计来适应周围环境。在需要快速转弯和灵活移动以逃避捕食者或捕捉猎物的环境中，这种特性尤其具有优势。此外，非可收回鳍的形态在不同物种之间可能有很大差异，反映了它们特定的生态位。例如，一些鱼类具有细长的鳍，有助于它们在水中滑行，而其他鱼类可能拥有更宽、更强壮的鳍，提供更大的推进力。鳍的结构多样性不仅展示了鱼类的适应能力，还强调了这些特征在其进化成功中的重要性。除了帮助运动外，非可收回鳍在交流和交配行为中也发挥着至关重要的作用。许多物种利用其鳍来展示统治地位或吸引配偶，展示出鲜艳的颜色和复杂的图案，这些只有在鳍完全展开时才能被欣赏到。这一鳍功能的方面突显了非可收回鳍在推动社会动态中的多重角色，超越了单纯的推进功能。此外，非可收回鳍的研究为我们提供了关于环境变化对水生生物影响的宝贵见解。随着栖息地因气候变化、污染和过度捕捞而发生改变，曾经对鱼类有利的适应特征可能会变成负担。理解固定鳍如何影响物种适应新条件的能力，对于保护工作至关重要。通过研究这些适应性特征，研究人员可以更好地预测哪些物种面临风险，并制定保护策略。总之，非可收回鳍代表了一种显著的进化适应，增强了我们对鱼类生物学和生态学的理解。从它们在运动中的作用到在交流和交配中的重要性，这些鳍对许多物种的生存至关重要。随着我们继续探索海洋生命的复杂性，非可收回鳍的研究无疑将继续成为一个重点领域，提供超越海洋的见解，融入更广泛的进化生物学背景。对这些迷人结构的持续研究不仅丰富了我们的知识，还强调了保护我们脆弱的水生生态系统平衡的重要性。