相關WelcometoWonderfulMu的文學知識

問題詳情：    WelcometoWonderfulMuseum.Thismonthwearehavingaspecialdisplayaboutoldmachinesfromdifferentcountries.Youcanfindthewaysmachineswereusedtohelppeopleonehundredyearsago.HowdidtheGermansmaket...