Oncetherewassomethingwrongwithamachineinafactory.The...
问题详情： Oncetherewassomethingwrongwithamachineinafactory.TheworkerscoulddonothingbutturntoaGermanengineerforhelp,whodrewalineonitandsaid,"Takeoffthepartwherethelineisandchangeitoranewone."With...