powerhouse
noun [ C usually singular ] uk/ˈpaʊə.haʊs/ us/ˈpaʊ.ɚ.haʊs/
强国；权势集团；显贵；身强体壮的人；精力充沛的人
a country, organization, or person with a lot of influence, power, or energy
Germany is an economic powerhouse. 德国是经济强国。
The university is no longer the academic powerhouse that it once was. 这所大学今非昔比，已不再是学术巨人了。
She's a powerhouse of original ideas and solutions. 她总有许多独到的见解和具有创意的点子。