average lifetime

简明释义

平均寿命;

英英释义

例句

1.The average lifetime of a light bulb is about 1,000 hours.

一个灯泡的平均寿命大约是1000小时。

2.In this study, we measured the average lifetime of various fish species.

在这项研究中，我们测量了各种鱼类的平均寿命。

3.Researchers found that the average lifetime of a smartphone is around two years.

研究人员发现，智能手机的平均寿命大约是两年。

4.The average lifetime of a human being has increased significantly over the past century.

人类的平均寿命在过去一个世纪中显著增加。

5.The average lifetime of a car battery is typically four to five years.

汽车电池的平均寿命通常是四到五年。

作文

The concept of an average lifetime is a fascinating topic that intersects various fields such as biology, sociology, and economics. In simple terms, the average lifetime refers to the typical duration that an individual or organism is expected to live under normal circumstances. This measure can vary significantly across different species and populations, influenced by factors such as genetics, environment, lifestyle, and healthcare access.For instance, when we consider humans, the average lifetime has dramatically increased over the past century due to advancements in medicine and improvements in living conditions. According to statistics, the global average lifetime was about 47 years in the 1950s but has risen to approximately 73 years today. This increase can be attributed to several factors, including better nutrition, reduced infant mortality rates, and the availability of vaccinations against deadly diseases.In contrast, the average lifetime of certain animal species can be considerably shorter. For example, the average lifetime of a housefly is just a few weeks, while a tortoise can live for over a century. These differences highlight how evolutionary adaptations shape the life spans of various organisms. Species that face higher predation risks or environmental challenges often have shorter life spans, while those with fewer threats may evolve to live longer.The average lifetime also plays a crucial role in sociological studies. Researchers examine how life expectancy varies among different demographic groups, often revealing disparities based on socioeconomic status, race, and geographic location. For instance, individuals from lower-income backgrounds may have a significantly shorter average lifetime due to limited access to healthcare and unhealthy living conditions. Understanding these disparities is essential for developing policies aimed at improving public health and ensuring equitable access to resources.Economically, the average lifetime can influence workforce dynamics and retirement planning. As people live longer, the implications for pensions and social security systems become increasingly significant. Countries with aging populations must adapt their economic strategies to accommodate a growing number of retirees who will rely on these systems for support.In conclusion, the term average lifetime encompasses a wide range of implications across different fields. Whether discussing human life expectancy, animal survival rates, or the economic ramifications of an aging population, understanding the average lifetime helps us grasp the complexities of life on Earth. By studying the factors that influence life spans, we can work towards improving health outcomes and fostering a better quality of life for all individuals, regardless of their background or circumstances.

“平均寿命”这个概念是一个迷人的话题，它交叉了生物学、社会学和经济学等多个领域。简单来说，“平均寿命”指的是在正常情况下，个体或生物体预期生存的典型时长。这个指标在不同物种和人群之间可能有显著差异，受到遗传、环境、生活方式和医疗保健可及性等因素的影响。例如，当我们考虑人类时，由于医学的进步和生活条件的改善，“平均寿命”在过去一个世纪里大幅增加。据统计，全球的“平均寿命”在20世纪50年代约为47岁，而如今已上升到约73岁。这一增长可以归因于多个因素，包括更好的营养、降低的婴儿死亡率以及对致命疾病的疫苗接种。相比之下，某些动物物种的“平均寿命”可能要短得多。例如，家蝇的“平均寿命”只有几周，而乌龟的寿命可以超过一个世纪。这些差异突显了进化适应如何塑造不同生物的寿命。面临更高捕食风险或环境挑战的物种通常具有较短的寿命，而那些威胁较少的物种则可能演化出更长的寿命。“平均寿命”在社会学研究中也扮演着重要角色。研究人员考察不同人口群体之间的寿命差异，通常揭示出基于社会经济地位、种族和地理位置的差距。例如，来自低收入背景的个体可能由于医疗保健有限和不健康的生活条件而拥有显著较短的“平均寿命”。理解这些差距对于制定旨在改善公共健康和确保资源公平获取的政策至关重要。在经济上，“平均寿命”可以影响劳动力动态和退休规划。随着人们寿命的延长，养老金和社会保障系统的影响变得越来越重要。拥有老龄化人口的国家必须调整其经济策略，以适应日益增长的依赖这些系统的退休人员数量。总之，“平均寿命”这一术语涵盖了不同领域的广泛含义。无论是在讨论人类预期寿命、动物生存率还是老龄化人口的经济影响时，理解“平均寿命”有助于我们掌握地球生命的复杂性。通过研究影响寿命的因素，我们可以努力改善健康结果，并为所有个体提供更好的生活质量，无论他们的背景或情况如何。