But the smaller male may be in luck. 但较小的这只雄巨角犀运气不错
But being big has other implications... 但庞大也有别的影响
But just as their ancestors were beginning to make progress, 但正当它们的祖先开始取得进展时
But not all their challenges are to do with finding food and water. 但并不是所有的挑战 都与寻找食物和水有关
but it's discovered that repeated hammering will tire the clam... 但它发现反复敲打会令蛤蜊疲惫
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