英语翻译
Concretesets,orhardens,intoadense,stonelikesubstance.Unlikestone,however,itdoesnothavebecutandshapedintoindividualblocksthatarethenfittedtogethertomakeawall.Instead,itcanbepouredintowooodenformstomakesolid,onepiecestructuresofalmostanyshape.