莽荒纪第二季在线播放

Narrated by Academy Award® winner Robert Redford, National Parks Adventure takes audiences on the ultimate off-trail adventure into the nation’s awe-inspiring great outdoors and untamed wilderness. Immersive IMAX® 3D cinematography takes viewers soaring over red rock canyons, hurtling up craggy mountain peaks and into other-worldly realms found within America’s most legendary o...。After six months of scientifically advanced training, three of the world's most elite distance runners set out to break the two-hour marathon barrier. These pioneers go on a global trek to defy the unthinkable and break the two-hour feat, from testing in wind tunnels and running labs in the United States, to balancing training with their day-to- day lives in eastern Af...。