National heritage corridors of USA are studied from an example as blackstone river valley heritage corridor and actions how American people to do with corridors are summarized.
通过对黑石河峡谷遗产廊道来研究美国国家遗产廊道，总结美国对于这种新型遗产保护的做法。
National heritage corridors of USA are studied from an example as blackstone river valley heritage corridor and actions how American people to do with corridors are summarized.
通过对黑石河峡谷遗产廊道来研究美国国家遗产廊道，总结美国对于这种新型遗产保护的做法。
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