国民年金的英文：
national annuity

national是什么意思：
adj. 国家的；全国的；国民的；民族的；国有的
n. 国民

Here is not merely a nation but a teeming nation of nations
这里不仅是一个国家，而是许多国家丰富的总和。

release of nationality
国籍解除; 放弃（脱离）国籍

a tributary nation
进贡国,2. 辅助的,3. 支流的,n.[C]1. 进贡国,附庸国[(+to)]2. 进贡者,3. 支流

The conception of the United Nations was in 1945.
联合国创始于一九四五年。

She is a nationally known writer.
她是全国知名作家。

annuity是什么意思：
n. 年金，养老金

An annuity is a contract you make with an insurance company.
年金是客户与保险公司签订的一种合同。

"Well, you have an annuity."
“嗯，你也可以拿年金呀。”

The accountant of the company commuted an annuity into a lump sum
这家公司的会计将年金折合为一次付清的总额。

The accountant of the company commuted an annuity into a lump sum.
这家公司的会计将年金折合为一次付清的总额。

Annuity bond: Bond on which interest is paid indefinitely and which has no maturity date.
年金债券:无限期支付利息，无到期日的债券