It produces so much oxygen, that it refreshes the atmosphere of the entire planet. 它制造了大量的氧气 是我们这个地球的空气清新剂

12. This is the Taiga Forest.
    这就是泰加针叶林
13. There are as many trees here, as in all the world's rainforests combined.
    它的面积,是所有热带雨林面积的总和
14. The Taiga circles the globe and contains a third of all the trees on Earth.
    针叶林环球分布 占全球所有树木总量的三分之一
15. It produces so much oxygen, that it refreshes the atmosphere of the entire planet.
    它制造了大量的氧气 是我们这个地球的空气清新剂
16. At the Taiga's northern extent the growing season can last for just one month a year.
    在针叶林的北部区域 树木的一年内的生长时节只有1个月
17. It can take fifty years for a tree to get bigger than a seedling.
    一棵树从秧苗到成年需要50年的时间
18. It's a silent world where little stirs
    除了偶有动静,这里万籁俱寂

来自《行星地球 第一季 第十集 Planet Earth S01E10 季节森林》第 15 行