in this instance, the mammals win out. 这次哺乳动物胜出 But reptiles have patience. 但是爬行动物有耐心 They've been playing this game since the dawn of the dinosaurs. 它们从恐龙时代初期 就开始玩这个游戏 And as mammals prospered, 随着哺乳动物的繁荣发展 so too did the snakes that fe...
...and raises the alarm. 提高警惕 But the snake is headed straight for her youngster. 但是蛇直扑幼崽 Thanks to parental care, 多亏有父母的招呼 in this instance, the mammals win out. 这次哺乳动物胜出 But reptiles have patience. 但是爬行动物有耐心 They've been playing this ...
But the snake is headed straight for her youngster. 但是蛇直扑幼崽 Thanks to parental care, 多亏有父母的招呼 in this instance, the mammals win out. 这次哺乳动物胜出 But reptiles have patience. 但是爬行动物有耐心 They've been playing this game since the dawn of the din...
She spots the danger... 它发现危险 ...and raises the alarm. 提高警惕 But the snake is headed straight for her youngster. 但是蛇直扑幼崽 Thanks to parental care, 多亏有父母的招呼 in this instance, the mammals win out. 这次哺乳动物胜出 But reptiles have patience. 但是爬行动物有耐心 ...
But young mammals aren't entirely helpless. 但是哺乳动物幼崽并非完全无助 They have their mothers to look after them. 它们有母亲来照顾自己 She spots the danger... 它发现危险 ...and raises the alarm. 提高警惕 But the snake is headed straight for her youngster. 但是蛇直扑幼崽 Th...
They have their mothers to look after them. 它们有母亲来照顾自己 She spots the danger... 它发现危险 ...and raises the alarm. 提高警惕 But the snake is headed straight for her youngster. 但是蛇直扑幼崽 Thanks to parental care, 多亏有父母的招呼 in this instance, the mammals w...
and silently pursuing their prey through the undergrowth. 以及悄无声息地 在下层灌木丛中追捕猎物 But young mammals aren't entirely helpless. 但是哺乳动物幼崽并非完全无助 They have their mothers to look after them. 它们有母亲来照顾自己 She spots the danger... 它发现危险 ...and raises ...
making them perfectly adapted to hunting in burrows 使它们完全适应了在洞穴中捕猎 and silently pursuing their prey through the undergrowth. 以及悄无声息地 在下层灌木丛中追捕猎物 But young mammals aren't entirely helpless. 但是哺乳动物幼崽并非完全无助 They have their mothers to look ...
Snakes evolved around the same time as the first true mammals. 蛇的进化时间 与第一批真正的哺乳动物大致相同 They lost the arms and legs of their reptilian ancestors 它们失去了爬行动物祖先的四肢 and developed a streamlined body... 并发展出流线型身体 making them perfectly adapted to hun...
and developed a streamlined body... 并发展出流线型身体 making them perfectly adapted to hunting in burrows 使它们完全适应了在洞穴中捕猎 and silently pursuing their prey through the undergrowth. 以及悄无声息地 在下层灌木丛中追捕猎物 But young mammals aren't entirely helpless. 但...