- Sheltered beneath the forests
在森林的庇护之下 - was a group of warm-blooded animals
有一群温血动物 - that had long hidden in the shadows.
长♥期♥隐藏在阴影之中 - The mammals.
哺乳动物 - At first, they were small creatures,
起初 它们是小型生物 - similar to voles.
与田鼠相仿 - With the dinosaurs gone, they were free to come out in the open.
恐龙灭绝之后 它们可以自♥由♥地出来活动