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1.The left-hand system is designed to make it easier for people with disabilities to use computers.
左手系统设计成使残疾人更易使用电脑。
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2. The left-hand system has been adopted by many countries as a standard for keyboard layouts.
左手系统已被许多国家采纳为键盘布局的标准。
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3.The left-hand system is used in many industries, including manufacturing and construction.
左手系统在制造业和建筑业中被广泛使用。