<http://schema.org/description>
"A new way to 3-D-print hydraulic systems at the same time as the rest of a device significantly simplifies the process of making functional robots."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.technologyreview.com/s/544766/how-to-3-d-print-a-hydraulic-powered-robot/>