法案最初仅保护八条河流及其周围狭窄的缓冲带不得筑坝和开发，如今这一保护名单已经增加到39个州的200多条河，还包括波多黎各。
The initial act spared eight rivers and narrow buffer zones around them from DAMS and development. Today the list has grown to more than 200 rivers in 39 states and Puerto Rico.
法案最初仅保护八条河流及其周围狭窄的缓冲带不得筑坝和开发，如今这一保护名单已经增加到39个州的200多条河，还包括波多黎各。
The initial act spared eight rivers and narrow buffer zones around them from DAMS and development. Today the list has grown to more than 200 rivers in 39 states and Puerto Rico.
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