The Partition command returns a list of non-overlapping sublists of a specified length.

$\mathrm{with}\left(\mathrm{MmaTranslator}\left[\mathrm{Mma}\right]\right)\:$

$\mathrm{Partition}\left(\left[a\,b\,c\,d\,e\,f\,g\,h\right]\,2\right)$

$\left[\left[a\,b\right]\,\left[c\,d\right]\,\left[e\,f\right]\,\left[g\,h\right]\right]$

$\mathrm{with}\left(\mathrm{MmaTranslator}\right)\:$

$\mathrm{FromMma}\left(\mathrm{`Partition[\{a,\; b,\; c,\; d,\; e,\; f,\; g,\; h\},\; 2]`}\,\mathrm{evaluate}\right)$

$\left[\left[a\,b\right]\,\left[c\,d\right]\,\left[e\,f\right]\,\left[g\,h\right]\right]$