英语翻译短文：Amanstepsonwhatseemslikesolidgroundbutdiscoverswithhorrorthatthegroundisgivingwaybeneathhisfeet.Themanstrugglesdesperately,butheistrapped.Hecannotescape.Slowlyhesinksdeeperuntilatlastheisgone

　　英语翻译

　　短文：Amanstepsonwhatseemslikesolidgroundbutdiscoverswithhorrorthatthegroundisgivingwaybeneathhisfeet.Themanstrugglesdesperately,butheistrapped.Hecannotescape.Slowlyhesinksdeeperuntilatlastheisgone,buriedinthetreacherousearth.Thesolidgroundissolidonlyinappearance.Itisactuallyquicksand,whichisadeepmassoffinesandmixedwithwater.Howisquicksandformed?Waterpushesupfrombelowthesurfaceandisheldbythesand.Thegrainsofsandareforcedapartbythewater.Theycannotholdanyweight.Thesubsurfacewatermayhavecomefromaspring,ariver,orastream.Sometimespoolsofwaternearbeachesbecomefilledwithsand.Whenthesoilunderthesepoolsdoesnotallowforgooddrainage,thesandcanbecomestretchesofquicksand.Isittruethatamanwhostepsintoquicksandisdoomedtodie?No,formenhavefoughttheirwayfromquicksandtofirmlandagain.Itispanicthatcreatestheconditionthatcanresultindeath,forthemoreapersonstruggles,theworsemattersbecome.Quickmovementswillmakethesandyieldtemporarily,butthenitrushesandsettlessolidlyaroundthebody.Amantrappedinquicksandshouldeitherlieback,ornotmoveatall,excepttostretchouthisarms.Whentheweightofthesandhisbodyhasdisplacesequalshisweight,hewillstopsinking.Withfeetheldstill,andwithslowmovementsofthearms,asinthebackstrokeinswimming,menhavemanagedtorolltosafetyandreachfirmground.急求这篇短文的能够“读得通”的中文翻译,如果是直接从翻译网址上拉下来的完全读不通的翻译请不要贴上来,