demography

demography的音标是[dɪˈmɒgrəfɪ]，翻译为“人口统计学；人口分布”。

速记技巧：将“demography”拆分为“de-mo-graphy”，其中“de”可以理解为“除去”，“mo”可以理解为“众多”，“graphy”可以理解为“记录、描绘”，由此可以联想到该单词的含义为“人口统计”。

Demography的词源：

词根：demography

词源：希腊语单词“demos”，意为“人民”或“居民”，加上词缀“-graphy”，表示记录或描述，因此，demography意为“人口统计”或“人口研究”。

变化形式：

过去式：demographed 或 demographed

过去分词：demographed

现在分词：demographing

相关单词：

1. Demographic：人口统计数据，人口统计学家。

2. Population：人口，人群。

3. Birth rate：出生率，指在一定时期内(通常为一年)新生婴儿的数量与同期平均育龄妇女数量的比值。

4. Migration：移民，迁徙。

5. Age structure：年龄结构，指人口中不同年龄的人口在总人口中所占的比重。

6. Sex ratio：性别比例，指在一定时点、一定地区、一定时期内某人口种群内两性人数的比例。

7. Urbanization：城市化，指人口向城市地区集中的过程。

8. Fertility rate：生育率，指在一定时期内(通常为一年)平均每位育龄妇女平均生子女数。

9. Census：人口普查，对一个国家或一个地区在一定时期内(某一年份)人口数量、结构和分布进行的科学调查统计活动。

10. Demographic analysis：人口分析，对人口数据和信息进行的分析和解读。

以上这些词汇都与demography相关，通过了解它们的词源、变化形式和含义，可以更好地理解人口统计学的概念和相关问题。

Demography常用短语：

1. population pyramid：人口金字塔

2. birth rate：出生率

3. death rate：死亡率

4. migration rate：迁移率

5. population density：人口密度

6. population growth rate：人口增长率

7. age structure：年龄结构

例句：

1. The population pyramid in this region shows a shift towards the younger age groups.

该地区的人口金字塔显示年轻年龄组正在向该地区转移。

2. The birth rate has been steadily increasing over the past few years.

近年来，出生率一直在稳步增长。

3. The death rate has remained constant over the past decade.

在过去十年中，死亡率一直保持不变。

4. The migration rate from rural to urban areas has been increasing steadily.

从农村到城市地区的迁移率一直在稳步增长。

5. The population density in this city is much higher than that of its neighboring towns.

这个城市的人口密度比邻近城镇高得多。

6. The population growth rate of this country has exceeded that of its neighboring countries.

这个国家的人口增长率已经超过了邻国的增长率。

7. The age structure of the population has undergone significant changes in recent years.

近年来，人口年龄结构发生了重大变化。

英文小作文：

The population demography of our country is constantly changing, with new generations coming into the world and others passing away. This process affects our society in many ways, from the economy to the education system to the healthcare system. Understanding the demography of our country is crucial for making informed decisions about how to allocate resources and how to plan for the future.

In the past few decades, we have seen a significant increase in the birth rate, which has led to a surge in the number of young people in our society. This has created challenges for providing education and employment opportunities for this group of people, but it also represents a potential resource for future economic growth. On the other hand, the death rate has been decreasing, which is a positive trend that will help us to age more gracefully and reduce the burden on our healthcare system.

The population density is another important aspect of demography that we need to keep track of. In some urban areas, the population density is extremely high, leading to crowding and other problems. On the other hand, in rural areas, the population density is usually lower, leading to more open spaces and opportunities for agriculture and other forms of rural development.

Overall, demography is an essential field of study that helps us to understand our society and plan for its future. By keeping track of these trends and making informed decisions, we can ensure that our country remains strong and prosperous for future generations.