富强的英文：
rich and powerful

参考例句：

May you succeed in building up a strong and prosperous country
祝你们建成一个富强的国家。

Promoting economic prosperity is aimed at building a prosperous and powerful country.
繁荣经济的目的，是为了建设一个富强的国家。

"Build a prosperous, strong, democratic and culturally advanced country"
建设一个富强、民主、文明的国家

In a word, our goal is to build China into a prosperous, strong, democratic and culturally advanced modern country
总起来说，就是要把中国建成富强民主文化的现代化国家。

rich是什么意思：
adj. 富裕的；华美的；昂贵的；肥沃的，富饶的；丰富多彩的；油腻的

Riches have wings
财富难保

The car was a rich cream color.
车子是瑰丽的奶油色的。

Her style is rich in simile.
她的文体中用很多比喻。

a rich custard set with gelatin.
一种华贵的奶油冻，用凝胶使之凝固。

fish rich in oil
含油丰富的鱼

powerful是什么意思：
adj. 强有力的；健壮的；效力大的；有权势的

smoothing power
修匀功效

These drugs are powerful.
这些药物很有效。

Applications of Power Electronics Technique in Power System
电力电子技术在电力系统中的应用

Wind power: Use of the energy in winds to produce power.
风力:利用风的能量来产生动力。

Power plant is a power of 140 hp piston engine.
动力装置是一台功率140马力的活塞发动机。