Before man ruled the world, Earth was a land of giants. Count down the biggest beasts of their kind to ever roam the planet in this eye-opening original special, and uncover the secret lives of these super-sized species. Birds with plane-length wingspans, dinosaurs rivaling a Boeing 737; this stunning CGI special goes in search of the truth behind these monsters, counting down ...在昼夜循环独立于现境的边境里,每一天都过的波澜不惊,一眼就看得到头。
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