The skuas can survive further south than any other predator 与其他猛禽相比 贼鸥的厉害在于它能在地球的最南端生存
and a whole swarm can consume literally hundreds of tonnes of vegetation. 而整团蝗虫云能消耗掉数百吨植物
Yet even this furnace can be transformed by water. 然而这个“火炉”也会因为水而发生改变
A single shower can enable seeds that have lain dormant for 30 years or more to burst into life. 一场大雨使得在地下沉睡了30多年的 种子迸发出生命的活力
means that desert elephants can only refill their tanks once every four or five days. 意味着沙漠里的大象 只能每隔四五天喝饱一回
It's the sort of behaviour that can make all the difference in a place of serious shortages. 这一举措在这个资源 严重匮乏的地方显得极为重要
Yet all this can change in an instant. 然而所有这一切即刻就将发生改变
so he can concentrate with them on keeping fit and healthy. 所以它要做的只是保证它们健康精壮