rust belt 或 rust·belt 也作 Rust BeltAHD[rŭstʹbĕlt'] D.J.[ˈrʌstˌbelt]K.K.[ˈrʌstˌbɛlt]n.（名词）
A heavily industrialized area containing older factories, particularly those that are marginally profitable or that have been closed.锈带：有许多老工厂尤其是那些勉强能获利或已关闭的老工厂的高度工业化地区