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.

假设指向角形脑和梭状，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，无论从大小还复程度来看，直立人的脑都不足以使他们学会说话，因此他们也许能和现代黑猩猩一样进行一。

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，和更大的凹槽，或者说沟，给它比折纸菠萝更多的褶皱。