The mammal's intelligence is his only defense... 哺乳动物的智慧是它唯一的防御手段
For the young Doedicurus, the only option is to stay put. 对巨犰狳幼崽来说 唯一的选择是保持原地不动
Desperate to defend her only calf, 迫切地想要保护自己的幼崽
there rose from the ashes a life-form that had previously only survived 一种此前只在边缘地带幸存的生物
But milk wasn't the early mammals' only secret weapon. 但是母乳并不是 早期哺乳动物唯一的秘密武器
But they are not the only ones to have conquered the world. 但征服世界的不只有它们
But they're not the only sunbathers here. 但在这里晒太阳的不只有它们
so only he can enjoy the hard-to-reach nectar of the angel trumpet flower. 所以只有它能够享用 难以触及的天使喇叭花花蜜