BBC听力 | 冰雪世界 11

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The window of opportunity is short

机会很短暂

As the current begins to build it's up up and away

洋流形成后会上升然后消失

These permanent holes in the ice provide seafood throughout winter

这些永不封存的冰洞在整个冬季都提供了食物

The diners attract others

欧绒鸭又吸引来了其它的动物

In the Arctic, any breach in the icy barrier can be a lifeline

在北极，打破冰层就相当于有了生存的机会

Musk oxen create their own

麝牛可以自己凿开冰洞

These giants have the strength to smash through the frozen crust to graze on the vegetation below

这种大型动物有力气打碎冰层，吃到下面的植物

These icebreakers create an opening for other over winterers

麝牛凿开冰洞，也为其它在北极越冬的动物提供了方便

Flocks of ptarmigan make unusual grazing companions for the musk oxen

一群岩雷鸟成了麝牛不同寻常的进餐伙伴

whose entourage grows throughout the day

麝牛的跟随者随着白天的延长变得越来越多

This odd assembly of vegetarians doesn't go unnoticed

这种奇特的食草动物的群体，引起了其它动物的注意

An arctic fox

这是一只北极狐

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