Liquid　metals　(LMs)　exhibit　superior　conductivity,　flexibility,　and　malleability,　empowering　their　versatility　across　multiple　fields.　It　was　prevalently　believed,　albeit　lacking　in-depth　mechanistic　insights,　that　these　features　stem　from　high　atomic　degrees　of　freedom.　In　this　work,　we　substantiate　the　intense　and　random　atomic　motion　in　LMs　through　the　interplay　of　theory　and　in　situ/operando　experiments.　In　particular,　we　visualize　structural　oscillations　and　crystallographic　orientation　variations　in　near-melting　LMs;　the　disordered　LM　atoms　are　not　confined　by　rigid　crystal　lattices,　in　contrast　to　their　solid　counterparts.　Owing　to　the　high　atomic　degrees　of　freedom,　LMs　possess　adaptive　surfaces　capable　of　dynamically　conforming　to　adsorbate　configurations　during　electrocatalysis,　especially　electrochemical　CO2　reduction　(CO2R)　that　has　been　hindered　by　the　hardship　of　key　species　adsorption/activation/desorption　on　solid-state　catalysts.　We　then　pressurize　the　CO2　to　further　enhance　the　adaptability　of　the　LM　surface　in　its　interactions　with　adsorbates.　As　a　result,　the　reactants　and　key　intermediates　are　greatly　enriched　on　the　liquid　metal　surface,　yielding　an　even　higher　CO2R　reactivity　compared　to　the　ambient-pressure　scenario　and　reaffirming　the　mechanistic　insights.