Complex sentence: Portable urine-diversion dehydration toilets are self-contained dry toilets, sometimes referred to as portable, mobile or stand-alone units and identifiable by their one-piece molded plastic shells or, in the case of DIY versions, simple plywood box construction.
Split into simpler sentences: Portable urine-diversion dehydration toilets are self-contained dry toilets, sometimes referred to as mobile or stand-alone units. They are identifiable by their one-piece molded plastic shells or, in the case of DIY versions, simple plywood box construction.