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The great migration from the rustbelt that helped fuel its growth has resumed .

曾经帮助这座城市实现发展的铁锈地带大迁徙又重新开始了。

Many of the rustbelt 's cities were single industry towns .

很多锈带城市属于那种单一的工业城镇。

And nowhere are green jobs more loudly promoted than in the rustbelt .

而“锈带”工业的“绿色职位”推广最为盛行。

Rustbelt states bled jobs in the downturn .

铁锈各州在经济下滑中流失了大量工作。

His base remains stronger in rustbelt cities and the countryside .

传统的老工业城市和农村仍然是他选票基础更牢固的地区。