名詞 heartland:

1. the central region of a country or continent; especially a region that is important to a country or to a culture

heart.land

n.（名詞）
A central region, especially one that is politically, economically, or militarily vital to a nation.
核心地帶：尤指對一個國家的政治、經(jīng)濟或軍事有重要作用的中心地區(qū)