China has been described as an 'emerging economic powerhouse'.
中国被称为“崛起中的经济强国”。
《牛津词典》
2
Nigeria is the most populous African country and an economic powerhouse for the continent.
尼日利亚是非洲人口最稠密的国家，也是非洲大陆的经济强国。
《柯林斯英汉双解大词典》
3
Glasgow's year as European capital of culture can certainly be seen as one of a complex series of factors that have turned the city into the powerhouse of art, music and theatre that it remains today.