Why are there twelve spheres - 2

To continue the explanation why exactly twelve spheres:

ལུས། lus here means body. དང། dang is a binding particle. We talked about ཡོངས་སུ་གཟུང་པ། yongs su gzung ba earlier; ཡོངས་སུ། yongs su is an expression, completely. གཟུང་བ། gzung ba is objectification, to grasp to objects. And this expression really has to do with sense objects and their objectification.

གཉིས། gnyis is two, or both, and ཉིད། nyid means exactly, itself.

So we are again dealing with the body and the objectification via senses.