![Earlyonemorning,morethanahundredyearsago,anAmericaninve...]( "Earlyonemorning,morethanahundredyearsago,anAmericaninve...")
- 問題詳情：Earlyonemorning,morethanahundredyearsago,anAmericaninventorcalledEliasHowefinallyfellasleep.Hehadbeenworkingallnightonthedesignofasewingmachinebuthehadrunintoaverydifficultproblem:Itseemedimpossibletogetthethreadtorunaroundtheneedlewithoutany...
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