The two halves are linked by a trunkline of between 200 and 300 million nerves, the corpus callosum.

两半部分由2到3亿条神经组成的主干连接，即胼胝体。

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Research showed that these two halves of the brain had different functions, and that the corpus callosum enabled them to work together.

研究表明，大脑的这两个半球具有不同的功能，胼胝体使它们能够一起工作。

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Scientists have found quite recently that the corpus callosum in women is always larger and probably richer in nerve fibres than it is in men.

科学家最近发现，女性的胼胝体总是比男性更大，神经纤维可能也更丰富。

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Another example in addition to those you cite in your post is that the corpus callosum (fibers that connect the two hemispheres in the brain) tends to be thicker in women than in men.

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Four different studies done in the past decade using MRI (magnetic resonance imaging) all found a slight reduction in the size of four regions of the brain: the corpus callosum, the basal ganglia, the frontal lobes, and the cerebellar vermis.

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