That means we were able to stand upright but also for our brain to evolve in the back and for our voice box to grow from seven centimeters for primates to 11 and up to 17 centimetres for humans.
To znači da smo mogli uspravno stajati, ali i naš se mozak mogao razvijati i naš grkljan je narastao za 7 cm kod primata, preko 11 do 17 cm kod ljudi.