translation.en: And as you can see, large amounts of the brain are not purple, showing that if one person has a thicker bit of cortex in that region, so does his fraternal twin.
translation.zh: 你可以看到，大脑的许多部分 不是紫色的，说明如果一个人 在那个区域的脑皮层较厚， 那他的异卵双胞胎也一样。