Findingenoughmeatwasaproblemforprimitive(原始的)manand,kee...
问题详情：Findingenoughmeatwasaproblemforprimitive(原始的)manand,keepingitfortimeswhenitwasscarce（缺乏的）wasjustashard.Threewayswerefoundtokeepmeatfromspoiling(腐烂.):salting(盐),drying,andfreezing.People...