life span

简明释义

使用年限

英英释义

例句

1.The average human life span 寿命 has increased significantly over the past century.

过去一个世纪，平均人类的寿命显著增加。

2.Researchers are studying how diet affects the life span 寿命 of various animals.

研究人员正在研究饮食如何影响各种动物的寿命。

3.Some species of turtles can have a life span 寿命 of over 100 years.

某些种类的海龟的寿命可以超过100年。

4.The life span 寿命 of electronic devices is often limited by battery life.

电子设备的寿命通常受电池寿命的限制。

5.In urban areas, pollution can decrease the life span 寿命 of residents.

在城市地区，污染可能会减少居民的寿命。

作文

The concept of life span refers to the duration of time that an organism is expected to live. It is a critical aspect of biology and ecology, as it influences population dynamics and species survival. Understanding the factors that affect life span can provide insights into health, environmental conditions, and evolutionary processes.In humans, the average life span has increased significantly over the past century due to advancements in medicine, nutrition, and overall living conditions. For instance, in the early 20th century, the average life span was around 47 years, while today, it exceeds 80 years in many developed countries. This increase can be attributed to various factors such as improved healthcare systems, better sanitation, and widespread vaccination programs that have reduced mortality rates from infectious diseases.However, the life span of individuals can vary widely based on genetics, lifestyle choices, and environmental influences. For example, individuals who maintain a healthy diet, engage in regular physical activity, and avoid harmful habits such as smoking tend to have longer life spans. Conversely, those who are exposed to environmental toxins or lead sedentary lifestyles may experience shorter life spans.In the animal kingdom, the life span can vary dramatically between species. For example, a house cat typically has a life span of 12 to 15 years, while a tortoise can live for over 100 years. This disparity is often linked to the species' reproductive strategies, ecological niches, and predation pressures. Animals that reproduce quickly and have many offspring may have shorter life spans, while those that invest more in raising fewer young may enjoy longer life spans.Research into the factors influencing life span also extends to the field of gerontology, which studies aging and its effects on the human body. Scientists are exploring ways to extend the life span through various means, including genetic manipulation, dietary changes, and lifestyle modifications. For instance, some studies suggest that caloric restriction can promote longevity by reducing metabolic rates and oxidative stress.Moreover, the concept of life span is not limited to biological organisms; it can also apply to products and technologies. For example, the life span of a smartphone might be determined by its hardware durability, software updates, and user care. Understanding the life span of products can help consumers make informed decisions about sustainability and resource management.In conclusion, the term life span encapsulates a multitude of factors that contribute to the duration of life for both organisms and products. By studying the elements that influence life span, we can enhance our understanding of health, improve quality of life, and make informed choices about our environment and technology. As we continue to explore the intricacies of life span, we pave the way for innovations that could potentially extend our lives and improve our well-being.

“寿命”这个概念指的是一个生物体预期生活的时间长度。这是生物学和生态学中的一个关键方面，因为它影响着种群动态和物种生存。理解影响“寿命”的因素可以为健康、环境条件和进化过程提供见解。在人类中，由于医学、营养和整体生活条件的进步，平均“寿命”在过去一个世纪显著增加。例如，在20世纪初，平均“寿命”约为47岁，而今天在许多发达国家超过80岁。这一增长可以归因于各种因素，如改善的医疗系统、更好的卫生条件和广泛的疫苗接种计划，这些都降低了传染病的死亡率。然而，个体的“寿命”可能因遗传、生活方式选择和环境影响而有很大差异。例如，保持健康饮食、定期锻炼和避免吸烟等有害习惯的人往往拥有更长的“寿命”。相反，暴露于环境毒素或生活方式久坐的人可能会经历较短的“寿命”。在动物王国中，“寿命”在物种之间可能存在显著差异。例如，家猫通常的“寿命”为12到15年，而乌龟可以活超过100年。这种差异通常与物种的繁殖策略、生态位和捕食压力有关。快速繁殖并拥有众多后代的动物可能具有较短的“寿命”，而那些在抚养较少幼崽上投入更多精力的动物则可能享有更长的“寿命”。对影响“寿命”因素的研究还扩展到老年学领域，该领域研究衰老及其对人体的影响。科学家们正在探索通过各种手段延长“寿命”，包括基因操控、饮食变化和生活方式调整。例如，一些研究表明，限制热量摄入可以通过降低新陈代谢率和氧化压力来促进长寿。此外，“寿命”的概念不仅限于生物体；它也可以适用于产品和技术。例如，智能手机的“寿命”可能取决于其硬件耐用性、软件更新和用户维护。理解产品的“寿命”可以帮助消费者做出关于可持续性和资源管理的明智决策。总之，术语“寿命”涵盖了影响生物体和产品生命长度的多种因素。通过研究影响“寿命”的要素，我们可以增强对健康的理解，提高生活质量，并就我们的环境和技术做出明智的选择。随着我们继续探索“寿命”的复杂性，我们为可能延长我们的生命和改善我们的福祉的创新铺平了道路。