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試行錯誤   Trial and error

https://storys.jp/story/37480 

Chapter 4 Birth of Setsuden-mushi (a profitmaking device) 

4.1.1.2 One hour in the latter half of the two hours from 4:00 am

午前4時からの2時間の内の後半の1時間  開発は試行錯誤  

 

Serially posted in English every Friday.