Eating lots in springtime is crucial. 在春季，大吃特吃是很重要的。 That's when protein in plants is more available and easier to digest. 那时的植物含有更多的蛋白质且更易于吸收。 Calcium is not very abundant in a lot...
Females have their own concerns. 雌性恐龙要顾好自己的事。 They must prepare to bring a new generation into the world... 它们准备将新的生命带到这世界， a new generation that needs to be a little bit better than the last. 新一...
Earning the right to reproduce means earning the right to impact the future of your species. 获得了繁殖的权利就代表获得了影响本物种未来的权利。 I suspect this whole dance had pretty much been choreographed through their lives...
It's all about getting your genes in the next generation. 你只想把自己的基因传给下一代。 Evolution tends to favor types of displays between members of the same species that are not necessarily lethal, 进化常常偏爱相同物种中成...
For egg-laying animals, it's almost always in the late spring or summer. 对卵生动物来说，一般都会在晚春或是夏季进行繁殖。 That way, the eggs can be incubating during the summer, during the warmest part of the year, 那样的话，...
Late spring, in the Cretaceous Period. Adolescence is a critical time. 白垩纪，暮春时节。青春期是一个关键时期。 Dinosaurs are preparing to mate. Some will succeed. Others will fail. 恐龙们正在为交配做准备。有的会成功...
Dinosaurs...the most sophisticated, best-engineered, highly adapted survival machines ever created by nature. 恐龙，大自然创造出来的最复杂的，设计最完美的，具有高适应性的生存机器。 These guys were very successful. 那...
Fossils of Tyrannosaurus Rex have been unearthed in the U.S.,Canada, even Asia. 在美国，加拿大，甚至亚洲都曾出土过雷克斯霸王龙的化石。 For scientists, these discoveries point to one conclusion...this carnivore has little to...
Tyrannosaurus Rex is a carnivorous monster that uses sheer force to overpower well-defended prey. 雷克斯霸王龙这种食肉巨兽完全凭力量征服防御良好的猎物。 It's unlike any other creature that has walked the planet. T. Rex is d...
The best way to attack Triceratops is with a long-barreled 75-millimeter antitank gun. 攻击三角龙的最佳武器是长管的75毫米口径反坦克枪。 Triceratops protects itself with a bony shield called a frill. 三角龙靠一种叫作头盾...
