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英语翻译Computer is a useful machine.It is the most important in
题目内容：
英语翻译
Computer is a useful machine.It is the most important invention in many years.The oldest kind of computer is the abacus used in China centuries ago,but the first large,modern computer was built in 1948.A computer then could do math problems quite fast.的
英语翻译
Computer is a useful machine.It is the most important invention in many years.The oldest kind of computer is the abacus used in China centuries ago,but the first large,modern computer was built in 1948.A computer then could do math problems quite fast.的
Computer is a useful machine.It is the most important invention in many years.The oldest kind of computer is the abacus used in China centuries ago,but the first large,modern computer was built in 1948.A computer then could do math problems quite fast.的
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