On the dark, humid forest floor 在幽暗的森林地表上

3. Forests like these occupy only three percent of the land
   雨林虽然仅占陆地的百分之三
4. yet they're home to over half of the world's species.
   却汇集了世界上一半以上的物种.
5. But how do so many different kinds of plants and animals find the space here to live alongside one another?
   那么如此众多的动植物种类 是如何获得自己的生存空间的呢?
6. On the dark, humid forest floor
   在幽暗的森林地表上
7. the jungle appears to be lifeless.
   看上去毫无生气
8. Often the only signs of life are what you hear.
   只听到各种生物的鸣叫
9. A male blue bird of paradise is advertising for a mate.
   这只雄性蓝极乐鸟正在做征婚广告

来自《行星地球 第一季 第八集 Planet Earth S01E08 热带雨林》第 6 行