An interim goal was set to insure that all navigable waters would be fishable and swimmable by 1983.
短期目标是到1983年保证通航水域可
钓鱼和游泳。
An interim goal was set to insure that all navigable waters would be fishable and swimmable by 1983.
短期目标是到1983年保证通航水域可
钓鱼和游泳。
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