在巴西的亚马孙河流域的原始森林里,生长着很多粗大的坚果树。坚果树高达50米,树干直径可达2米,树龄达到500岁以上,是亚马孙雨林里最大的树木之一,也是巴西境内特有的物种。坚果树之所以得名如此,是因为它结有坚果的果实。那果实大似足球,重达8公斤。每当成熟的果实从50米高的树上落下 In the native forests of the Amazon basin in Brazil, there are many large, nutty trees. Nut trees up to 50 meters in diameter, the trunk diameter of up to 2 meters, reaching over 500 years old, is one of the largest trees in the Amazon rainforest, but also endemic species in Brazil. The reason a nut tree is so named is because it has the nutty fruit. That fruit is like football, weighing 8 kg. Whenever ripe fruit falls from a tree 50 meters tall