英语听力：探索发现 2012-10-24 长毛象王国 Mammoth—20（在线收听）

 One giant short-faced bear is more than a match for two lions. But in this bitter climate, lions can’t afford to go without a meal for long. A mammoth calf in its first winter is a tempting sight. But mammoths are attentive mothers and they have the back-up of their herd. The calf is ringed by vigilant relatives. The lions try to find a loophole. The mammoth’s matriarch, the oldest female, takes control. And she has 60 years’ experience of putting lions in their place. In the bosom of their close-knit family, the calf is safe, from predators at least.