Hypotheses point to the angular gyrus and the fusiform gyrus, which are structures in the brain responsible for things like understanding metaphors and integrating multiple sensory inputs.

假设形脑回和梭状回，这是大脑中负责理解隐喻和整合多种感觉输入的结构。

Alan Walker thinks the spinal canal didn't have the size and complexity to enable speech, that they probably would have communicated about as well as modern chimps.

艾伦·沃克认为，无论从大小还是复杂程度来看，直立人的脑回都不足以使们学会说话，因此们也许能和现代黑猩猩一样进行一些交流。

So in order to squeeze all that material into your skull, the brain forms little creases, called gyri, and larger grooves, or sulci, giving it more folds than than an origami pineapple.

所以为了把所有的材料挤进你的头骨，大脑会形成小折痕，叫做脑回，和更大的凹槽，或者说沟，给它比折纸菠萝更多的。

Think about the sole cyan gyri and then the corpus callosum, and then, and I can still see it in my mind's eye Exposure to the material, but it involved hours upon hours About the material within my own.

象一下那唯一的青色脑回， 接着是胼胝体，然后，即便现在，我仍能在脑海中清晰地浮现出这些结构。接触这些知识的过程耗费了无数个小时， 深入探索我自身的神经解剖。 这本身就带有一种元认知的意味。