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20xx秋九年級英語全冊unit6whenwasitinventedsaturday復現式周周練課件新人教版(編輯修改稿)

2024-07-11 15:26 本頁面
 

【文章內容簡介】 our clothes so that we can spend our time in doing more important things. Early Versions The washboard was invented in 1797. James King came up with the idea and invented an early version of the washing machine in 1851 that was handoperated and shaped like a drum.③ (Section B 3aSelf Check) HandPowered William Blackstone created a washing machine for his wife in 1874. A wooden paddle(槳 ) moved the clothes around a series of wooden pegs(栓 ) to knock dirt loose. Blackstone began building and selling his new invention for $. (Section B 3aSelf Check) Electric Alva J. Fisher invented the first electric washing machine in 1908. It was called the “Thor” and was produce
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