英语听力：自然百科 北极熊 冰上间谍 Spy_Bear—3

 She blinks in the sunlight. She spent her confinement¹ in semi-darkness. She checks that the coast is clear and then reveals her secrets. Time for a stretch. She's been cooped up with her cubs² since she gave birth three months ago. They learn by example, but the first lesson seems to be about snowballs. When she leaves, she expects them to follow. But the first steps are always the most difficult to take. 

 

A frozen sea now surrounds the islands. It stretches all the way to the North Pole. It is out on this ice that most polar bears spend their lives. But in spring, males return to land to search for females. Males may be a risk to cubs, but this one is otherwise engaged. He's found a lone³ female.

1 confinement   

n.幽禁，拘留，监禁；分娩；限制，局限

参考例句：

• He spent eleven years in solitary confinement.他度过了11年的单独监禁。
• The date for my wife's confinement was approaching closer and closer.妻子分娩的日子越来越近了。

2 cubs   

n.幼小的兽，不懂规矩的年轻人( cub的名词复数 )

参考例句：

• a lioness guarding her cubs 守护幼崽的母狮
• Lion cubs depend on their mother to feed them. 狮子的幼仔依靠母狮喂养。 来自《简明英汉词典》

3 lone   

adj.孤寂的，单独的；唯一的

参考例句：

• A lone sea gull flew across the sky.一只孤独的海鸥在空中飞过。
• She could see a lone figure on the deserted beach.她在空旷的海滩上能看到一个孤独的身影。