Earlyonemorningmoret的知识精选

Earlyonemorning,morethanahundredyearsago,anAmericaninve...
问题详情:Earlyonemorning,morethanahundredyearsago,anAmericaninventorcalledEliasHowefinallyfellasleep.Hehadbeenworkingallnightonthedesignofasewingmachinebuthehadrunintoaverydifficultproblem:Itseemedimpo...
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