India is the 4th largest economy in the world. What does this mean? In what way is it the 4th largest economy?

印度是世界第4大经济体。这意味着什么？从哪方面来看是世界第4大经济体？

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Sandeepan Bose, Armchair Economist

Economy is measured by GDP which can be understood as any of the three things below

经济规模是通过GDP来衡量的，而GDP可以通过以下三方面来看

The total income generated by the citizens of the country. It includes profits generated by businesses.
The total value of goods and services consumed by the citizens of the country.
The value addition done by the citizens of the country.

一国国民创造的总收入，这包括企业的利润。

一国国民消费的商品和服务的价值

一国国民创造的附加值

The first and third aspect shows how productive the citizens of the country are.

The second aspect shows the standard of living of the country.

第一和第三个方面表明该国国民的生产力。

第二个方面表明该国国民的生活水平。

The GDP per capita is a true measure of the earning capacity or the standard of living of a country. However if you consider GDP alone then and India deserve to be the first and second contenders for the top position. However USA takes the top spot because USA has huge amount of capital invested in businesses that generate income for its citizen while the population of the country isn't very high compared to and India.

人均GDP衡量一国国民的赚钱能力，以及一个国家人民的生活水平。

如果单单考量GDP，和印度应该是争夺第一的前两名竞争者。然而，现在第一的是美国，因为美国企业投入大量资金，创造了大量财富，虽然美国人口跟中印比起来并不高。

BTW the population of India is going to overtake the population of in another 10 years. India will overtake USA in GDP because of the huge population but won't be able to beat as it's population is better educated and more skilled.

顺便说下，未来10年，印度人口将超过口。

凭借着庞大的人口，印度GDP将超过美国GDP，不过无法超过GDP，因为口受教育水平更高，技能更熟练。