Computer entered our lives during the middle of last century; today computer has become an indispensable tool in our lives.
上个世纪中叶电脑才开始进入我们的生活，今天电脑几乎已经成为我们生活中必不可少的一个工具。
Computer entered our lives during the middle of last century; today computer has become an indispensable tool in our lives.
上个世纪中叶电脑才开始进入我们的生活，今天电脑几乎已经成为我们生活中必不可少的一个工具。
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