translation.en: Because we are creatures living on the surface, our perception of the inner side of the planet is in some ways skewed, as is that of the depth of the oceans or of the upper atmosphere.
translation.zh: 因为我们是居住在地表的生物， 我们对于地球内部的看法 在某些方面是不正确的， 就如同我们对大洋深处 和近地空间的看法一样。