Little wonder the Federal Duck Stamp Program has been called one of the most successful conservation programs ever initiated.
难怪联邦鸭票被称为有史以来最成功的自然保护计划之一。
Little wonder the Federal Duck Stamp Program has been called one of the most successful conservation programs ever initiated.
难怪联邦鸭票被称为有史以来最成功的自然保护计划之一。
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