Because quite naturally, this has come from a brazil nut tree.

这个是从巴西胡桃树上摘下来的。

Now, the brazil nut tree needs the agouti, way down there, to disperse the seeds.

巴西胡桃树需要地面上的刺鼠散播种子。

Once a year, the tips of the brazil nut tree branches are adorned with large white flowers.

巴西坚果树每年开一次花，树枝被白色花朵装饰了起来。

And why can't this mighty brazil nut tree survive without an orchid and this nimble little rodent?

为什么这种看似十分强壮的巴西胡桃树离开了兰花和这种小啮齿动物就活不了？

But what has all of this got to do with our story of brazil nut trees and agoutis?

这个又跟巴西胡桃树有什么关系？跟刺鼠有什么关系？

The agouti is the only animal that can disperse the seeds of the brazil nut tree, so the brazil nut tree is completely reliant on the agouti.

拉美刺鼠是唯一能够帮助巴西胡桃散播种子的动物，因此巴西胡桃完全依赖这种动物。

The intricate relationship between the male orchid bee and the flowers is the reason that brazil nut trees like this one can only grow in intact rainforest ecosystems.

雄性兰花峰和花朵的关系是巴西胡桃树为什么只能在原始的热带雨林生态中生长的原因。

This selective door policy is the tree's way of ensuring that it will only be used by insects which are guaranteed to visit other brazil nut tree blooms and then pollinate them.

胡桃树用这种选择性的进入门槛，确保进入自己花朵的蜜蜂有能力进入其他的胡桃花并完成授粉。

This tall and ancient brazil nut tree produces nuts that we can eat; these water lilies are big enough to lie down on.

这棵高大古老的巴西坚果树生产出可供我们食用的坚果；这些睡莲大到可以躺在上面。