它的主要工作是在救援人员无法到达的地方寻找生命迹象。
Its main job is to search for any signs of life in places where human rescuers are unable to go.
他们在人和狗无法到达的地方建造了人造海滩和人造沙洲。
They made artificial beaches and sand bars in areas inaccessible to people and dogs.
它们能潜入冰层下面，然后结冰时就进入冬眠，直到我们需要它们在无法到达的地方进行研究。
They can go beneath the ice, and then to hibernate as the ices closes in, until we need them to carry out their research in unreachable areas.
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