powerhouses
n.
强大的集团[组织]( powerhouse的名词复数 );
精力充沛的人，身强力壮的人;
例句:
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Eat more beans . Beans all kinds are nutritional powerhouses.
食用更多豆类,各种豆类是养分供应站.
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The region is one of Germany's economic powerhouses.
来自BBC
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Now, Cambodia has to compete with industrial powerhouses like China.
来自VOA
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Both turned their programs into the powerhouses they remain to this day.
来自WSJ