So far ,only a handful of cores have been drilled that go back to the last ice age and none of them provide enough information to prove how the Amazon rainforest reacts to climate change.

• 到目前为止，只有很少的一些果核已经被取到并能追溯到冰河时代，但他们并不能提供足够的信息来证明亚马逊雨林是如何对气候变化起作用的。