1.如播卡顿或失败可切换片源。
2.如播放失败可点击切换线路。
3.我们最近发现视频里开始有插播广告，每个视频大概有好几秒，可以用快进跳过。这些广告都是视频源那边自带的，我们这边无法控制，谢谢大家的谅解。
年份：
2012
主演：
类别：
The Last Ocean The Ross Sea, Antarctica is the most pristine stretch of ocean on Earth. A vast, frozen landscape that teems with life - whales, seals and penguins carving out a place on the very edge of existence. Californian ecologist David Ainley has been traveling to the Ross Sea to study this unique ecosystem for more than thirty years. He has written scientific papers desc...
