勤俭建国的英文：
build the country through hard work and thrift;build the country through diligence and thrift;build the country with industry and frugality;carry on national construction through hard work and thrift

参考例句：

Hard work,plain living and building up the country through thrift
艰苦奋斗、勤俭建国

Resolutely implementing the guidelines of self-dependence, fighting our way, and building country thriftily
坚定不移地执行自力更生、艰苦奋斗、勤俭建国的方针。

build是什么意思：
v. 建造；把…嵌入；构筑，营造；扩大；发展；建立
n. 体形，体格

Buffer buildings
缓冲建筑物

building elevation
建筑立面

This is a substantial building.
这是个坚固的建筑物。

country是什么意思：
n. 国家；乡村，田野；区域
adj. 乡下的，乡村风味的

The country was in ferment.
那个国家处于动乱中。

It is the trademark of the country.
它是该国的标志。

This is an agricultural country.
这是个以农业为主的国家。

through是什么意思：
prep. 通过，穿过，凭借，由于，从始至终，遍及，完成、耗尽，不顾，贯穿
adv. 直达，从头至尾，电话接通
adj. 直达的，完成的、结束的，电话接通的

Have you got through?
电话接通了吗？

To foretell through or as if through the art of divination.
占卜，预言通过或似通过占卜术预言

Lasting or active through the year or through many years.
常绿的全年或多年都充满生机