热带雨林只占地表的一小部分，大约是6%，但它的树木种类比世界上任何其他地区都多。

Rainforests make up only a small part of the Earth's surface, about six percent, but there are more kinds of trees than any other area in the whole world.

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原始森林树木种类繁多，是一座真正的宝库，从缅因州向南一直延伸至乔治亚州。

The virgin forest with its richness and variety of trees was a veritable real treasure-house which extended from Maine all the way down to Georgia

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出人意料地，植被因子和鸟类数据并没有关联；事实上，贫穷社区里的树木种类还比较多。

Surprisingly, the vegetation factors did not correlate with the bird data - in fact, poor neighborhoods had a greater diversity of trees.

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