听力文本

It's spring in the great broad leaved forests of Eastern Europe and Asiatic Russia.
这是跨越东欧-亚洲-俄罗斯的世界上最大的落叶阔叶林的春天。
The mandarin ducks are courting.
鸳鸯正在示爱。
The female mandarin nests in a tree hole,
雌鸳鸯在树上筑巢，
and when it's time for everyone to leave she leads the way.
她正在带着所有的宝宝们离开巢穴。
The ducklings are only twenty four hours old.
小鸳鸯才24个小时大。

It's a long drop, and a few calls of encouragement are required.
要让它们从这么高的地方落下，妈妈鼓励的叫声是必须的。
Two down seven to go. There are still two missing.
2只降落，还有7只。还少着2只。
All present and correct. But they won't be safe until they reach water,
如数到齐。在赶到水中之前它们还很不安全，
and the forest pool is almost a mile away.
林中的池塘还有1英里远呢。

视频及简介

在北极边缘有着大片针叶树林，那是矮小的针叶科树木寂静的世界。那些树或许真的很矮，但在高空拍摄下，树林显示出其真实的大小。世界有1/3的树木都生长在这里，在短暂的夏季里，这些树木制造了大量的氧气足以改变的大气的成份。