英语听力：自然百科 野性俄罗斯之西伯利亚 Siberia—13（在线收听） |
Away from the rocks and into the grasslands, the family of ground squirrels keep a watchful eye. At just three weeks old, four siblings have started to explore the world beyond their burrow. Like Meerkats in Africa, vigilance is key. They stay alert even when they are feeding. When they are not nibbling grass, the ground squirrels nibble with each other. Grooming is a big part of their lives because if the snakes don't get them, the insects will.
Close inspection shows their fur harbors a miniature universe of mites and bugs, perhaps not so cute after all.
The ground squirrels aren't the only ones on Olkhon with problems. Around 100,000 Baikal seals live on the lake which may soon be an unsustainable figure. Hundreds crowd onto rocks around the island. They shiver involuntarily to keep warm and seek rocks for sunbathing .But space is tight. The lucky ones squeeze in though that doesn't necessarily guarantee a warm reception.
The frustration of one soon spreads .With few natural enemies, the seals apparently like to pick on each other. |
| 原文地址：http://www.tingroom.com/lesson/zrbaike/2011/259575.html |