- exactly how many we have no idea.
至于确切数量我们不得而知 - The character of the forest changes as we descend,
从上到下 森林的特点也在发生改变 - becoming ever darker and damper,
越往下就越阴暗潮湿 - favouring different kinds of animals and plants.
适合各种不同种类的动植物 - Less than 2 percent of the sunlight reaches the floor,
只有不到2%的阳光能够到达丛林地表 - but even here there is extraordinary variety.
即便如此 这里的生物种类也异常丰富 - In the great island of New Guinea there are 42 different species of birds of paradise,
在新几内亚岛上生活着42种不同的极乐鸟
favouring different kinds of animals and plants. 适合各种不同种类的动植物
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