an area where an activity or an organization is especially successful, popular or important 核心区域；重要地带◆the industrial heartlands of Germany 德国工业的核心区域◆the heartland of the automobile business 汽车业的核心区域⨁the agricultural / industrial / manufacturing heartland 农业／工业／制造业核心区域
a place which is considered to be at the centre of a country or region （国家或地区的）中心地带；腹地◆a dairy company in America's heartland 一家位於美国中心地带的乳制品公司