一口气把5集看完了，奥巴马讲解。很不错的片子，和《动物世界》有相交，但这个更侧重于我们如何保护自然生态环境。各大洲的国家公园，美哉。
Netflix 上有。下面链接有中文字幕；
https://www.iyf.tv/play?id=vbgQNaLwTL1
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